What's the difference between accuracy and precision? - Matt Anticole

View full lesson: ed.ted.com/lessons/what-s-the-...
When we measure things, most people are only worried about how accurate, or how close to the actual value, they are. Looking at the process of measurement more carefully, you will see that there is another important consideration: precision. Matt Anticole explains what exactly precision is and how can help us to measure things better.
Lesson by Matt Anticole, animation by Anton Bogaty.

[@aksmename_DipperandMabel]

For short, Accuracy: How close you can get to the correct result Precision: How consistent you can get that result

[@klutz3955]

yep

[@LeOssiTrollterrible]

Dipper and Mabel thank you i had trouble understanding

[@TobiBobi4]

Accuracy: Hit rate Precision: Critical-hit rate smh

[@memberberry5860]

The wise words of a true pokemon master xD

[@herosheller7656]

So, your comment is accurate or precise?

[@hiwayM9]

It is my opinion this video offers a precise definition of accuracy and an accurate representation of precision.

[@jackthmp]

***** precisely

[@Excedrine]

***** Very accurate.

[@Anthony-um6hv]

Dead on target?

[@Excedrine]

Anthony the III Precisely. :D

[@nacho74]

Yeah, it was well done. To be honest, I always thought that accuracy is something physical in the sense of how close one gets to the target and precision similar to this but more abstract and more about non-physical things but it turned out to be slightly different than that :D

[@911gpd]

Since English is not my native language, I thought those 2 words were synonymes

[@carultch]

Honestly, most native English speakers don't know the difference either.

[@jackieyi769]

What does that have to do with native english speakers?

[@911gpd]

GoldenPit maybe because you understand your native language better...

[@kathrynehiersche1817]

To be fair most of us thought they were too!!!

[@Will-qv6es]

Since English is my native language, so did I. The difference is like splitting hairs in most contexts to be honest

[@jw8628]

Every time you see the word precision replace it with consistency and you'll be fine.

[@ProfessorSyndicateFranklai]

+Jacob Walley What about accurarcy?

[@danieldyman7196]

+Professor Syndicate (Frank Lai) leave it. precision is mixed up WITH accuracy so accuracy should stay the same

[@ProfessorSyndicateFranklai]

Oh

[@rich1051414]

Um... if I measured something, and told you it was between 1 cm and 100 miles long, that is perfectly accurate, but not precise... not sure consistent has much to do with it. If I measured something and told you it was 87.343242cm long, that is very precise, but if it was 87.343243cm, it is actually an inaccurate measurement. In this, the measurement that was miles off is actually more accurate than the one off by 0.000001cm, because of the precision stated in the measurement.

[@AleksandrKramarenko]

@Richard Smith What you said is incorrect. Here's a quote from wikipedia (it's supported by this video): "In the fields of science, engineering and statistics, the accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's true value. The precision of a measurement system, related to reproducibility and repeatability, is the degree to which repeated measurements under unchanged conditions show the same results." en.wikipedia.org/wiki/Accuracy_and_precision In short: Accuracy is how close you get to the desired result, and precision is how consistent your results are. It makes more sense if you write down multiple measurements in your examples. I'll redo them: Example A - you measure an object that is in reality 13 km long. You get varied results but they never go below 1 cm or above 100 km. You get results like: - 50 km long - 100 km long - 1 cm long You conclude the object must be between 1 cm and 100 km. This answer is not accurate because you got nowhere near the actual length of the object and you still don't know how long it is. Second, it's not a precise conclusion because you get inconsistent results - maybe if you redo the measurements the next day, you'll then get completely different numbers - so, it's not a very reliable conclusion. Now, let's say you redo the measurements (example A) with a better measuring instrument and now you conclude the object is "between 12 and 14 km". That makes it pretty close to the actual number. If you conclude that your results definitely stay within that range (12 to 14 km), then you could say it's fairly precise, but not entirely. If you are OK with having a small margin of error, then you could argue your conclusion is accurate and precise enough. Example B - you measure an object that is in reality 87.343242 cm long. You get results that are similar each time (but note how they are incorrect, the last digit is different): - 87.343243 cm - 87.343243 cm - 87.343243 cm You conclude the object must be 87.343243 cm. This is not accurate because it's not the actual length of the object, but you don't know that at this time because you trust your measuring instrument. This result is precise because you get the same result each time and therefore it's pretty reliable, and so you are pretty sure you won't get a different result if you repeat the measurement the next day. But your conclusion is not accurate, even though you think it is, how do you solve that? Being a true believer of the scientific method, you decide to double check your work, maybe you then find out you made a mistake, or maybe you find out your measuring tool isn't working correctly, or maybe you let someone else do the measurements to triple check your work, and maybe then you find out your conclusion was in fact inaccurate. Or maybe you don't do all of that and you stay confident that your conclusion is accurate, even though it's not. Or maybe you did do all of that, but you still don't find out that your conclusion was inaccurate...

[@YusranFachry]

If you guys still wonder what's the difference: - Accuracy: The closeness of measurements relative to *a specific value* - Precise: The closeness of measurements relative to *each other*

[@itsfine_txt]

Thanks. Everyone's just been giving examples of situations or replacing the words with other words they deem appropriate. Both can be misunderstood easily because of its lack of certainty and because they didn't really specify the difference. A lot of the comments also have replies talking about how they're right at some things but wrong at others, so it's hard to read it all and choose who to believe. This is a simple and straight to the point definition.

[@aayushdhungana360]

But more like not A specific value but THE specific value.......A specific value is still precision

[@DungLe-yd4xy]

tks for your information

[@ziadalaoui2461]

just like mu and sigma(average and standard divergent)

[@killerbhaigamingoriginal]

*Oh Mr smart everybody knows this bookish language*

[@4dityanarayan]

He kept saying William Tell throughout the video, when the actual german name is Wilhelm Tell. He's not accurate cuz he isn't right, but he's precise in his inaccuracy cuz he's consistent with the pronunciation. Thanks I'll go gloat now.

[@Mutantcy1992]

Meta explanation that's also accurate

[@zyaicob]

His Anglocized name was William. Names change throughout languages.

[@dianabivens717]

Great! I'll be using this in my class to help illustrate the difference! :-)

[@berlinemashayamombe6955]

Hahahah

[@albedoshader]

And his friends probably called him Willi.

[@ludvigschroll338]

the story actuelly stems from a myth in nordic tales: a man drink a little to much and bosts about his archery skills the king makes him a bet; if you can hit the apple off you sons head i will never tax your farm again. the man places his son 100 m away and pulls out two arrows he tasted the wind took aim. and hit on the first shot. a round off applause is given'. the king then asks: why did you take two arrows when you perfectly hit on the first? the man answer: if i had missed, the other would have been for you!

[@LifeLikeSage]

Doesn't sound like he had a high level of precision.

[@jonathanOschlaepfer]

Kinda seems like this Nordic fellow was rather idiotic. In actuality the story probably got to Switzerland via the Germanic tribe the Alemanni who Conquered much of eastern Switzerland and the story was eventually found by a Swiss story writer who changed somethings to fit with the setting in which the story of William Tell took place ( the 1290's ) during the time the old Swiss Confederacy was formed.

[@michealwontfindthis5021]

ludvig schroll lol

[@skullmax3595]

Thug life

[@EternalFinity]

Damn

[@antisociallibra5361]

Thanks for explaining better than my math teacher Ted-Ed

[@schizophrenicenthusiast]

This has nothing to do with math...

[@antisociallibra5361]

Well, my math teacher was talking about it in our class, and it was mostly similar, and it was a lesson in our math books, but maybe it wasn't, idk

[@schizophrenicenthusiast]

+Toy DavisAvis This is more related to statistical analysis which in theory you'd only need of you're wanting to become a scientist. I don't know why you'd have a lesson about this.

[@antisociallibra5361]

I don't know either heh

[@lucanina8221]

people usually blame math teacher even if they step on a shit

[@RN-lz6fc]

so precision = reliability, and accuracy = validity

[@Mutantcy1992]

If you're talking about multiple measurements, precision is in some sense like reliability, but not quite. Accuracy of a measurement is how close to the true value you are. If I have a device that measures temperature down to a single degree, and I measure the temperature of boiling water, an accurate measurement would be 100 C. A less accurate measurement would be 98 C and a much less accurate measurement would be 125 C. However, the precision of these measurements is the same; they all measure to a single degree. Instead, if I had a device which measured down to a hundredth of a degree, it should measure boiling water to be 100.00 C. Again, measurements of 98.00 C or 125.00 C would be less accurate, but equally precise.

[@RN-lz6fc]

Gotcha, thanks for the clarification and correction! So just to reiterate to see if I've got it right, precision is a property of a measurement that allows it to hit a value to within a certain unit, regardless of the accuracy of the measurement. Reliability, however, is the tendency of the measure to measure the same thing consistently. And, accuracy is the property that allows a measure to hit a value that is close to the correct value. And validity is the property that allows a measure to hit the value that the measure was made to hit. Is that all right?

[@Mutantcy1992]

***** In this context, reliability and validity are sort of dangerous words to use, and the only that have clear definitions are precision and accuracy. A bad ruler reliably measures things wrong, you know? And if you don't know it's a bad ruler, the measurements are valid as far as you know. I'll continue with the boiling water example. Device A measures boiling water three times, reading 90 C, 110 C, and 100 C. Device A is not very precise, but can be said to be somewhat accurate, as the average of its measurements is 100 C, the true value. Device B reads 60.002 C, 60.001 C, 60.002 C. These measurements are very precise, going down to a thousandth of a degree, yet they are quite inaccurate, because they are about 40 degrees off the target. Device C reads 100.01 C, 99.99 C, 100.00 C. This device is both accurate and precise. Hope that's clear! :)

[@RN-lz6fc]

Now I understand much better. Thank you!

[@Mutantcy1992]

***** Cheers!

[@simlucien]

Really cool video, I enjoyed it and watched it 3 times, but I still don't know the difference between accuracy and precision.

[@simlucien]

That was easy. Thanks!

[@PradyumnPCEEE]

hahahahaha

[@itsneverlupus5544]

I can explain

[@hrashidi100]

accuracy is actually doing it, and precision is being able to do it multiple times

[@itsneverlupus5544]

Artemis Fowl no

[@ShawnRavenfire]

It's said that William Tell had two arrows, one for the apple, and one for the lord in case he missed the first shot. Personally, I would have aimed for the lord first.

[@PongoXBongo]

Shawn Ravenfire Then both he and his son would have been killed. Going Rambo in real life is a bad idea. =P

[@zoned7609]

Shawn Ravenfire Yeah, the lord kind of had guys with swords and bows backing him up. I duno how much good the second arrow would have done him.

[@HumanBeingSpawn]

+Shawn Ravenfire I used to be a lord, then I took an arrow.

[@vigilantiz]

+Human Being don't tell me that you got an accurate shot precisely to your knee.

[@weed75black35]

+apburner1 He could hit the tree.

[@misaelacruzsoto1326]

In short conclusion, "precision" tells the consistency of making the same result ,and "accuracy" tells how close or far is your result from the real one. These two answers are used daily and are really important on things like engineering and chemistry(as shown in the video).

[@millerrepin4452]

So precision means consistent and accurate means hitting the actual target got it.

[@danieldyman7196]

yes you got it!!!!

[@tdeefox]

accuracy means that there is an improvement in the process of hitting the target precision means how many times your shot successfully landed as predicted

[@proaaron578]

No, you're wrong. You got them mixed up.

[@esscate]

tdeefox You have not gotten it.

[@rodrigozanabria2978]

@@tdeefox what he said but with different words

[@saqibmudabbar]

Q.Where can I buy apples? A.Where they sell apples (accurate) A.At the Monty fruit shop just around the corner (precise) As long as the answer is right, it's accurate. If the answer is consistently right, it's precisely accurate.If the answer is consistently wrong, it's precisely inaccurate. If the answer is inconsistent, it's imprecise, some answers will be accurate, some will not be accurate.

[@hugoandersson2872]

Muhammad Saqib Mudabbar .

[@hemantbanik7493]

Muhammad Saqib Mudabbar Thanks bro... Totally got it now!! But did not understood the application of them in archer 😐😐

[@danielkunenborg2076]

this comment sums up the video, it saves you about 4 minutes and 30 seconds :D

[@HyperOpticalSaint]

In that case you should just use the word consistency instead of precision, this whole video is BS.

[@blaccsheep2543]

Dr. Saqib Isnt that about being specific

[@thatchannelyoudontknow]

This video explained the difference better than my Physics teacher did. 11/10

[@adra7825]

I love how properly you guys explain information, You guys have the best accuracy of information and best precision for explaining

[@clocksan9553]

what's the difference between accuracy and precision? after rewatching this video 5 times, i still have no idea

[@TurnOntheBrightLights.]

+clock san As I understand it: Accuracy - 1:31 How close you come to the correct result. Precision - 1:41 How consistently you can get that result.

[@linmp2709]

for example, if u want to measure the mass of 1m³ of solid iron, u use electronic balance, and each time u measure the solid iron, u may get DIFFERENT results with using SAME apparatus(ele.balance), and that means the PRECISION of ele. bal. is not high enough as there is obvious fluctuation of measured value. For accuracy, as mentioned in the video, it stands for how close u come to the true/ exact result (in this case, value of 1m³ of solid iron), and i need to point out that sometimes the exact/ true result is impossible to be obtained

[@jacquearnaud8264]

Nice that really helped. Thanks

[@youmah25]

me too

[@chronousnemesis]

The word precision is so confusing. You all should just use consistency instead. That's what I learn in school. That way you don't have to confuse yourself with the language barrier.

[@chronousnemesis]

Here's an easy way to understand the difference 1.bp.blogspot.com/_PyvjcvYfRLk/SWHumaQY-fI/AAAAAAAAAW8/suw87QVBIl8/s400/accuracy+vs+consistency-02.png

[@victornoagbodji]

chronousnemesis thank you. i came to learn from the video but i learned from this comment instead.

[@NathanielSelby]

chronousnemesis The terms used in this video, accuracy and precision, are commonly used in numerous statistical textbooks. Although the two terms are confusing from the standpoint of standard English, they are the correct statistical terms.

[@chronousnemesis]

Nathaniel Selby Thank you for the clarification and it is indeed true where precision means standard deviation of the estimator (estimated values) in statistical point of view. I also found out that in statistical also use the word bias instead of accuracy for the difference between the actual value and estimated value. I just wanted to express that it would be better if we use consistency although the term precision may have been set up in their textbooks. IMO, it might also be better if we separated the terms use in statistical and science.

[@NathanielSelby]

chronousnemesis Fair enough. Often technical jargon is needlessly confusing.

[@MegaMaxclan]

I don't usually press like before I watch the video but when I do it's a ted ed video

[@kim15742]

The exact opposite usually applies for Ted Ex videos, lol

[@QuetzalJr]

I remember in high school over this subject and using suction cup arrows to see who did the best. I was surprised by how well I did when going for the smallest targets. Fun little activity to fully understand the concept of accuracy and precision.

[@cheekyfiofio]

precision is hitting the same thing consistently? accuracy is how close you get to the result? precision without accuracy is hitting the same thing over and over but not getting close to the right thing and accuracy without precision is hitting near the thing but in different places or hitting the thing but never hitting it again? Is this right?

[@Shadow_Dragon_1056]

I think it's like precision is how much you hit THAT spot and accuracy is how close you come to hitting the spot you WANTED TO HIT. but i'm not sure

[@Shadow_Dragon_1056]

so yes, i think

[@Indoor_Carrot]

Think of a complex math equation precision means always ending up with the same answer each time you calculate the equation and accuracy means how close you are to the correct answer ;)

[@Shadow_Dragon_1056]

unbeatablesniper16 already said that

[@Indoor_Carrot]

Shadow Dragon 1056 Just putting it into a context

[@faustin289]

Woow, Your analogies and examples drive the point home accurately. I remember my remote sensing lecturer struggling to explain this distinction years back at college.

[@willardmakinishi6980]

Thanks to TED-Ed (Matt Anticole) for those wonderful explanations. Cheers. You make a big difference. Double thumbs up

[@petraquartz8666]

Precisely accurate?

[@SanLeMans]

Petra Quartz ...wait omg idk anymore

[@fern9760]

Accurately precise?

[@leahadekunle-raji5771]

precision increase decreases accuracy and accuracy increase decreases precision. They are closer to being opposite than similar (but they are not the same thing and not fully opposite. The methods of reaching the correct target should be the main focus when trying to understand them)

[@trunghoang4503]

means hit the same spot multiple times but not at the target?

[@PokeMaster22222]

As long as you don't actually _hit_ a star. Because you'd be fried in an instant. Which is bad.

[@PokeMaster22222]

Still dead.

[@someguyontheinternet2521]

dammit i was gonna say that

[@agioiutdrdgfyfyfhgky]

+Xenorbic is still wrong, you'd be torn apart by gravity before you get anywhere near close enough to be vaporized. :D

[@Sam-oz8pn]

That's not true, as stars are far too large. You would have to get very close in before you hit your roche limit, but you would be inside the star already so there would be less gravity. That torn apart by gravity thing is actually only present in black holes, quark stars (if they exist), and neutron stars (and maybe white dwarves)

[@TechCamper]

The Animation done to explain these terms is very good😊

[@nathacartee1228]

Thanks this is probably the only video I found that I can understand

[@bananian]

why don't they just use the word consistency then?

[@saqibmudabbar]

Precision depends on consistency. If there is consistency, the device is precise. No consistancy, no precision.

[@bananian]

Muhammad Saqib Mudabbar I meant why don't they replace precision with consistency.

[@burt591]

+bananian Yeah consistency sounds way better

[@boenrobot]

Precision is the consistency of the accuracy, not the consistency itself.

[@minhcena1681]

Because there is such thing as a synonym

[@bellasherwin3166]

I love these animators! Love them too much!! Thanks for clearing this up! 🌹🙌😁

[@ahmedmohamed-yx1ln]

from the depth of my heart thank you

[@lamar6941]

this explained it more than my teacher. this really helped! thanks Ted-ed!

[@Rider0107]

Accuracy: How close you can hit it. Precision: How many times you can hit it.

[@user-cd4bx6uq1y]

Did ya mean %

[@alakhpandeyoffical6290]

1. Accuracy :- How close you can get to the correct results While 2.Precision :- How consistent you can get that results

[@entique4216]

What does consistent mean

[@sureshotshorts1207]

I was presicely looking for this video and it accurately explained me the difference.

[@abdulqavi330]

it was a splendid video and explained everything clearly thanks

[@ghostboi1738]

This 4 minuet video taught me more than a teacher did in a whole week.

[@faustin289]

In shooting, I'd define accuracy as how close your "mean" shot is to the target. The precision would thus correspond to the standard deviation of the distances between that mean and your shots landings.

[@ludosrex]

Recently, I watched another video about drawing that essential said as your skill increases you can take on more difficult challenges. This ties into that nicely.

[@ludosrex]

Here is the link to the video for those that are interested. kzbin.info/www/bejne/aGO7iqKbo7pgZsU

[@tsukikotsutsukakushi9339]

I remember in my high school chemistry class, this was the first lesson we were taught. It was so frustrating to wrap my head around the concept that two words I've used interchangably have different meanings. Even to this day I still have some trouble reconciling what they mean.

[@amirshahzadshahzad3418]

Hi

[@Wine4our]

When he said legendary marksmen I was like ROBIN HOOD!!!

[@quentinc712]

me too then I'm like wait, who?

[@KoalaBearWarrior]

This isn't a great example - its too esoteric. I once had a VP-level interviewer ask me "what is 37 times 37"? My answer was, "its a number between 0 and infinity". He said, "no thats not the right answer", and I said, "actually it's 100% accurate. What you're referring to is precision, so let's get more precise ... "/ and yes I got the job :)

[@sanjeetsinghk]

okay now you've confused me more than I was before.

[@sanjeetsinghk]

shouldn't you say, let's get more accurate?

[@KoalaBearWarrior]

no, because the answer I gave was accurate, but imprecise.

[@captainzork6109]

Oh, that's a lot clearer answer than I got from the video. Thank you, I will stop watching now (:

[@freshrockpapa-e7799]

If you estimated the answer doing 40*40 and saying that it is around 1.600 that would be more precise?

[@tiastralintothevrains5167]

Thanks alot this really deserves a like. Helped me alot with my study lol.

[@saja-ym7qq]

Good video I am need that in my pharmaceutical calculations lab. Thanks

[@Markus9705]

When the variable is stochastic the accuracy then be compared to the mean value and the precision to the standard deviation (or variance).

[@eastonyi6850]

That's just what I wanna say :)

[@jirojarapa3098]

So here's my understanding based from what I learned from my teacher at high school. Accuracy is the closeness of the data to the true value. Precision is the consistency or how often you get the data. Situation You, and your friends are to measure a 3.4 m yarn. You then get the following measurements: 3.4m 3.4m 3.4m 3.4m You are both accurate and precise Your Friend A got the following measurements: 2.9m 3.7m 3.7m 2.1m Friend A is both inaccurate and inprecise Friend B got the following measurements: 3.3m 3.5m 3.4m 3.2m Friend B is accurate but not precise Friend C got the following measurements: 3.1m 3.1m 3.1m 3.1m Friend C is inaccurate but precise

[@SevenDeMagnus]

Thanks. Why do they say precision instruments, like a caliper & not accuracy instruments?

[@illblues1072]

I like how they made an easy topic like that very interesting

[@rahulbanyal9933]

Great, explanation. Thanks ted-ed

[@kevinlane1219]

I believe the point here is Precision is always far more important than accuracy.

[@xuanbachlai5371]

Kevin Lane not quite, there are ways to improve both but in this case, high precision and low accuracy has a better fix

[@kevinlane1219]

Xuan Bach Lai Thank you.

[@markuskarlsson2001]

Kevin Lane Not always

[@tempfan5547]

Kevin Lane it is because is there really such thing as precision without accuracy? not praticaly. lets say i shoot a basketball and everytime its 4 eaches on the left. well i must be dumb not to know how to ajust so it goes in. in real life theres no such thing as precision without accuracy

[@bruh-di4ku]

Kevin Lane most of the time.

[@farfetched1660]

Here's the short version: Accuracy: How close you can hit your target Precision: How consistently you can hit your target Example: You shoot 10 paintballs at a target. Case 1: They all cluster around the center of the target, but only one or two hit the bullseye. You have good accuracy, but the paintball gun is inconsistent and has bad precision. High accuracy, low precision. Case 2: They all hit in basically the same spot, but that spot is just below the bullseye. Your paintball gun is super precise, but your aim just sucks. High precision, low accuracy.

[@gudetamwa]

Copied lol

[@anaklusmosgreek3198]

Thats why i hip fire whilst aiming down sight.

[@xxx_jim_the_reaper_xxx]

@@anaklusmosgreek3198 Better take these notes so I can play Medal of Honor next time.

[@anaklusmosgreek3198]

@@xxx_jim_the_reaper_xxx dont focus on shooting just shoot and keep your eyes on the center of the screen thats where your aim is always at. Let your thumb do the work depending on your sensitivity and recoil

[@xxx_jim_the_reaper_xxx]

@@anaklusmosgreek3198 Ummm... I'm trying to practice my Accuracy against a moving target. Sigh... such a pain.

[@fwcolb]

A recent paper was recently withdrawn based on this issue. Have not got time now to outline why. Nor to watch time video. But the topic is so important I have subscribed and saved to watch later.

[@mardenmalmberg5883]

Great job Ted, I really liked the video

[@candiduscorvus]

Semantics. Semantics is the difference between accuracy and precision.

[@leahadekunle-raji5771]

It’s not the difference but a better understanding of semantics can help people understand the difference

[@cloverpepsi]

I think you mean "cement tactics."

[@bojackson4125]

I like this narrator. My ears are extremely sensitive to voices/sounds and when people gulp on mics, that sound is amplified alot which irritates me greatly. I just wanted to commend on the audio editor for doing a fantastic job!

[@Ridlay_]

This is really interesting. I’ve never really thought about a potential difference between the two, quite the mind bender.

[@humboldt777]

Wonderful, video. very elucidating! Thank you.

[@joshcastro7221]

we learned about this in chemistry

[@tallymark2417]

Shooting a rocket into the stars sounds like a great murder plot.

[@abhishekkandwal5753]

Ted Ed has been precise in giving accurate information about any topic

[@harrisonmarques9466]

Gratidão TED-ed! Every time i see you i get better u.u

[@amritas2400]

*Accuracy* : how close a measurement is to its standard or known value. *Precision* : how close 2 or more measurements are to each other, regardless of whether the value is accurate or not.

[@OriJ123]

For everyday life, imagine that the time is 12:00 The more accurate clock shows 11:59 The more precise (but less accurate) clock reads 11:58:27

[@tomchch]

AM OR PM? I HAVE TO KNOW

[@boymanthe2nd17]

tomchch ROFL

[@M15CH13F]

Learned about this in concepts in science. Thanks for reminding me.

[@mymusicloversworld]

WoW. Nicely explained.

[@AhmedKachkach]

In statistics and other fields like machine learning, these are often described with "bias" and "variance". Variance is... how much a variable varies (duh!), so high variance = low precision (according to this video's description) Bias is (basically) how far the average value is from the one you expect, so high bias = low accuracy.

[@hasanshirazi9535]

Precision is related to the equipment in two ways: 1. Degree of exactness in reporting "Individual Results": A measuring tape is precise to 1mm, while a Vernier Caliper is precise to 0.1mm. 2. Ability of the instrument to produce consistent results over a "number of readings". This is what has been explained in the video. Accuracy is related to the person using the equipment and depends on his expertise in use of the equipment, adopting correct procedures, and applying necessary corrections to obtain the results.

[@vishalpachpande5921]

Very important in metrology .....thanks for sharing knowledge

[@vpraveenkumar1982]

Great explanation

[@nandoanalog]

Keyword consistency.

[@leahadekunle-raji5771]

Consistency is its own thing though. It would have cleared up a lot of synonym confusion if they explained all three in one video

[@Masterchief0397]

For military Accuracy: i need to destroy this grid square Precision: i need to destroy that building in the grid square.

[@SM_Fato]

👍👍👍👍👍

[@popukuttansvlog1106]

Good one but actually bad😄

[@backupaccount3407]

Thank you so much

[@MrMental2010]

Got it. Thanks!

[@sarah12232]

I'm just gonna say what I learnt in class:- Accuracy: how close the result or average of results is to actual value. So peak of occurrence graph is on actual value Precision: how close every result is to other. So occurrence graph has a steep peak. Also low accuracy means high systematic error and low precision means high random error

[@ConspiracyCon578]

In lamens terms I'd say accuracy is how close the value is to the true value while precision basically means in the same ballpark. For example we virtually never say "how precise is it?" We say "precisely" But rather "how accurate is it?"

[@sarah12232]

@@ConspiracyCon578 yep

[@ChesterCheetos1997]

1:15 Top 1 tension moments in anime.

[@ahnmichael1484]

I feel like people are saying this is a great explanation because it has really nice animation, a pleasant voice, and someone speaking confidently. I don't find this to be an exceptionally useful way of understanding the distinction, and it seems like most of the experts in the comments don't understand it well enough to apply it to a tangible problem, either. Also as someone who actively studies linguistics (the "science of language"), language doesn't belong to any one group; the fact that the hard sciences have found this distinction really valuable doesn't mean that people casually using "accurate" and "precise" as synonyms are wrong, it simply means that words can mean more than one thing, and also that one thing can be described by multiple words.

[@jamesrhodes3857]

This helps so much

[@jaglinuxmint]

I am still confused.....

[@Mutantcy1992]

Accuracy is how close your measurements get to the true value, while precision is how close your measurements are to each other. Water boils at exactly 100 C, which means you could say it boils at 100.0000 C as well (it's a definition). A thermometer in boiling water that reads 100 C is more accurate than one that reads 98.843 C, but is a less precise measurement.

[@jaglinuxmint]

Mutantcy1992 thanks.....your example is quite easy to understand....

[@MrLDiabolo]

Mutantcy1992 helping out in every comment thread I see here lol, good contribution

[@Mutantcy1992]

+LDiabolo Cheers!

[@yato3520]

The arrow at the end, who wondered what it was going to hit?

[@KhalladShoaib]

Hilarious !! I am addicted to your awesome presentation of different sciences !!

[@shreeshailkanakal5612]

Too good explanation....thank you😊😚

[@Gowerrr]

"NASA doesn't always know where their probe is going to land on Mars" Perseverance would like to have a word

[@edwardcortez6662]

Before watching this video, I'm going to say precision is how close your trials are to each other while accuracy is how close you are to the "actual" measurement.

[@jazz4dayz543]

I watched the video before reading comments; that does actually seems to make sense. Didn't think about it that way.

[@hahkhaa_9340]

Ty thats really helps ❤️

[@maqboolahmed8469]

It's the only channel where comments are actually more interesting than video especially on that video what's live by ted ed 😅❤

[@PelegTsadok]

My language doesn't have different words for accuracy and precision.

[@mironadriana]

+Peleg Tsadok whar is ur language ? Mine has . They are called acuratețe and precizie.

[@PelegTsadok]

mironadriana Hebrew. It has only דיוק - which is pronounced di-yuk.

[@trotskyeraumpicareta4178]

+Peleg Tsadok mine has 2 words that are synonims, it confuses me a lot too :(

[@The1234567890ashish]

Mine too. It's Marathi.

[@sabrinathompson4238]

Or you could just shoot for the moon, cause if you miss you'll land on the stars

[@lilllwizzzle]

You will not. The closest star besides the sun is 4 light years away. And even if you did land on a star, you wouldn't live to tell about it. In fact, you'd disintegrate on approach, and wouldn't land on the star at all.

[@fjoa123]

Sabrina Thompson if you miss the moon you'll be in orbit arround the sun and never ever hit anything.

[@jebc4652]

he difference is very interesting and important when talking about any subject.

[@RafaelKeveluk]

Amazing video!

[@flibbernodgets7018]

The main thing I took away from this video is the story of William Tell. I didn't know he was forced to shoot the apple off his son's head, I thought he was just doing it for kicks.

[@jonathanOschlaepfer]

Yeah, The story is from Switzerland and basically the lord that was mentioned put a pole up with his hat on it and said everyone was to kneel when walking past it but William Tell refused and was forced to shoot the apple off his son's head or they would both be executed

[@Vouax]

Accuracy is the probability of hitting something. Precision is the the amount of damage bases off of weapon / combo based powers

[@leahadekunle-raji5771]

?

[@eduardoramirez-fo2mq]

DcUO

[@OmegaTryce]

berry precisely discussed, so that I accurately understood it.👍

[@welshpete12]

What a wonderful thing KZbin is . It's almost like a university , anything you want to know is there for you to discover .

[@wackyanimations3326]

except, in universities, you are forced to learn things you do not have interest in

[@Ironjagg]

is this sentence accurate? precisely

[@four7five]

Ironjagg LOL

[@churrocharcharm]

Ironjagg W-wait.... I... um... *curls up into a ball in the corner*

[@asmitajoshi5523]

Nice one

[@SecretEyeSpot]

Sheesh . talk about Inspiring..

[@andreimaria2137]

3:44 I laughed so freaking hard imagining a conversation going like: -"So, where are you going to land?" -"uhm... here...?"

[@ianms0028]

Thanks, Mr. Goff.

[@netnet_in_a_sweater9351]

Accuracy - tools Precision - method

[@Mutantcy1992]

If I have an object that is 10.001 cm long, and I measure it with a ruler, I'll say it is 10 cm long, because a ruler is not a very precise measurement tool. With high quality calipers, a more precise tool, I could say that it was 10.001 cm long. With poorly calibrated calipers, I may measure that the object is 9.001 cm. This measurement is exactly as precise as the 10.001 cm measurement, but is inaccurate. The rule measurement of 10 cm is more accurate, but less precise, while the bad caliper measurement of 9.001 cm is less accurate but more precise. I haven't watched the video yet, but I imagine they use the dartboard analogy at some point. This analogy can be useful for understanding accuracy and precision of measurements, but measuring tools have innate accuracy and precision, and one or one million measurements will not change those.

[@mr.logician1915]

Ted Ed is precise in explaining things.

[@ekoy9704]

I hated this question in the board exam. I was always guessing the answer, now I know. Thank you for the simplified explanation.

[@BreezyInterwebs]

I suck at this, can someone clarify Accuracy: if you can hit it Precision: how you can hit it ??

[@TheGeckoGold]

+TG CoffeePlus Accuracy- how close you are to the correct result. Precision- how often and reliably you can get that correct result.

[@TheGeckoGold]

+Gecko Gold so Accuracy: How close you are to hit it Precision: How often you can reliably hit it

[@GarketMardener]

+TG CoffeePlus For the scattered results -> no precision, but if the center of those is at the right spot, there is acurracy. For the clustered results, off target -> no accuracy, but precision

[@GiggaGMikeE]

+TG CoffeePlus Accuracy = How close you come to hitting a bullseye with an arrow on any given shot Precision = how reliably you can hit the same spot on a target each time you fire an arrow. A single arrow needs to be accurate, but when firing multiple arrows over a time, it's easier to fix the aim of a precise shooter, than it is the make the arrows less random for an imprecise shooter who occasionally lands a perfect bulls-eye.

[@cooltv2776]

+TG CoffeePlus think of it like this you have a circle, your arrow will hit _somewhere_ in the circle, you dont know exactly where though accuracy is being able to put the circle on the target, precision is having a smaller circle