How To... Perform a Chi-Square Test (By Hand)

[@WenZ1221]

This amazing video taught me chi sqaure in 5 minutes while my professor has been trying to teach us for 5 classes already. You're amazing!

[@graceadaji1500]

Nice explanation

[@marshallliberman3931]

Imagine having to sift through tons of over complicated and long videos just to find out this gem was here all along. Thank you

[@naomondicho5668]

I AM GLAD I RAN INTO THIS VIDEO. NEVER HAVE I GOTTEN SUCHA SIMPLE EASY TO FOLLOW EXPALNATION TO A COMPLICATED CONCEPT LIKE TODAY. BLESSINGS!

[@frog091]

Sir your video exceeded my expectations. I gained a good understanding of the subject matter. Please accept my thanks.

[@katyawhittam3783]

wow so helpful! I was completely overwhelmed at the notion of trying to tackle this for my psychology class but you've just made it so simple!

[@joyntinyari5244]

Help me

[@Teeshhx3]

Sooooo helpful!!!! I have a test tomorrow and this really helped me understand it better. Thank you!

[@vincentdomingo5253]

Letícia Moraes You are beautiful😍

[@MyKneeHurts]

alroght u thristy fuck its youtube comments not insta dms @@vincentdomingo5253

[@adsalamaable]

btw, only genius makes very complicated things look very simple :)

[@EugeneOLoughlin]

Hi Ahmad - thank you for your kind thoughts. Dr E.

[@meenakshiraghavan5086]

I agree. Someone once told me about the difference between learning from anyone, and a Master. Today, I have experienced what the difference is. Thank you Mr. O' Loughlin

[@kakashisenpai99]

Thank you

[@hemapriyaaeonian1484]

Thank you sir

[@lindabrown5240]

Dear Mr. O'Loughlin, I have tried to use chi-square in my forensics class. It has been used, by me, to see if there is a correlation between the medullary structure of animal hairs and nocturnality; which came up as a possible explanation for the differences in medullary structure, by chance, during a lesson. Your explanation is clear and accessible for high school students. Thank you. And, oh yes, the probability for animals that share the characteristic of cell-like structures, walking and running locomotor patterns and nocturnal activity patterns is 10.48. This is well beyond the 7.81 critical value...so further investigation is warranted. Best regards, Linda Brown Bronx, NY

[@BeezyGamer]

did you ever figure it out

[@gotmoosefur3030]

Its like being sweet-talked into learning

[@EugeneOLoughlin]

Hi "gotmoosefur" - that's one of the nicest comments I have ever got. Thank you! Dr E.

[@keironbraithwaite4907]

Eugene, I'm a Mathematics teacher in NE England and your online material is fabulous. It is so helpful for students revising for their Psychology & Biology A Levels. Thank you!

[@EugeneOLoughlin]

Hi Keiron, Many thanks for your kind comments - I'm glad that your students find my videos useful. BTW - I find with my own students that the Chi-square test is one of the most error prone tests that they do - many forget to do the last line (O-E)2/E, and end up summing the wrong data. Warn your students of this! Dr E.

[@keironbraithwaite4907]

@@EugeneOLoughlin Hi Eugene, Yes, I have also noticed one or two making this error. Thankfully most seem to know what they're doing. As both the psychology & biology A-levels have a 10% maths content, your videos have proven invaluable to these students. Thanks again, Keiron

[@aderemiademola7088]

You make me complete a journey of 4years within 7minutes and 33seconds. Simple and understandable. Thank you.

[@forlinginst]

It takes a genuinely good teacher to explain a complex thing in such straightforward terms.

[@werkitbaby]

Just saved my life on an exam. THANKS!!!!

[@andyjhirsch]

Same, this guy is great.

[@gigachad12367]

Exam is today good luck

[@hockeymaskbob2942]

how much did you pay to learn this at college? cause I just learned it for free in 7 minutes from KZbin.

[@MjaySenoj]

THANK YOU SO MUCH IVE BEEN WORKING THIS OUT FOR A FULL WEEK AND YOUR THE FIRST TO EXPLAIN MY WEAK POINT PROPERLY

[@waqqashanafi]

Exam in 1 hour...

[@wannabeIAS-rb26]

Half an hour bhai..

[@eleanorlondon1961]

I am repeating my 2nd year for IRM, have sat through countless lectures, asked many people and watched a million videos. 4 minutes into this video, and I have finally got itS thank you so so so much 🙏🏻🙏🏻🙏🏻

[@maryammalek2827]

you made it so much easier. didn't study this throughout the year, but in 7 minutes. thank you so much, life savior. :)

[@meenakshiraghavan5086]

Your videos are extremely informative. I'm glad I found your videos. Keep up the good work, and keep uploading more videos. Students like me could always use them.

[@michaelmorlugbe7549]

You always make complex task simple ..thank you

[@emmanuelbacud6930]

Thanks Dr. E. for this lecture. By the way in the Philippines, it has been suggested by the academe that Chi-square (Test for Independence) must be also utilized to determine whether two classification criteria are independent of each other such that we intend to use contingency tables or in market research studies (referred to as the cross-tabs).. :)

[@kaylavermaak949]

thank you so much! i am a psychology major and i have to take a mandatory stats course and you honestly helped me so much!

[@shownmichael4960]

Very useful

[@jonstfrancis]

That was put over so simply and explained everything so well! Thank you.

[@CyberKestrel]

This is by far the best Chi-Square example I have found! Thank you so much for the excellent video!!!!

[@angelyinkore9491]

You may never know me in person but you got me through my third year of college. You're a blessing thank you

[@EugeneOLoughlin]

:-)

[@GirlAlmighty93x]

I am currently revising for my assignment & you literally saved my life, thank you!

[@ljlpope7265]

I struggled to comprehend this topic for weeks!! I watched this video and got in in seven minutes. THANK YOU!

[@jayasri8689]

Before watching the video... i was worried about the test .... now am clearly understood the concepts..... you are so brilliant....... thank you sir.....

[@m.khaledhamwi9830]

I am glad This is the first video i have watched, cause i don't need to watch anymore cause all my questions were answered. Thanks man

[@mahbubhasan8194]

What a way to keep difficult thing simple. I wish if i had a teacher like that. However, you solve a great problem of mine.

[@lauvshree]

Your explanation, by far, is the best.

[@VinOnline]

Brilliant video, you are a genius and are helping out so many people out there with these videos!

[@Dr.NDriSeverinKouassi]

I love this kind of teacher. You saved me.

[@cowieebb6638]

Thank you for this. Best chi square explanation on KZbin

[@eliakangumbe2946]

Superly explained . I have understood it very well. Can't wait for any chi-square question in exam.

[@R3NVERRD]

I like the speed of your explanation, it's not too slow (I usually play 1.25x on other people's tutorial) and not too fast. Keep up the good work! :D

[@kinaferrante1788]

I've been trying to figure out how to do the chi-square question on my statistics assignment for two days now. This video cleared it right up and I understand now. Thank you!

[@music4life102100]

Definitely found this very useful and this video just summarized my whole exam which I'm about to take in an hour.

[@pedrocodile5083]

how did u do

[@melaniedawkins1408]

You're my favorite person on the internet right now! Thanks sooo much

[@nilosmitabanerjee2492]

This is like one of the best videos ever! Thanks for making it so simple and intuitive

[@n.sriselvamuthukumaran5932]

Even the layman can understood your video, awesome sir, you are real guru, real teacher......SIMPLY SUPERB sir,,,GOD MAY BLESS YOU FOR LONG LIVING

[@mr.slick2000]

Great Video... You run through the process very smoothly and I now know how to do it!

[@Hannah-xo8rm]

Thank you so much for this video!! It was so helpful the first time I used it that when I forgot your channel name I spent half an hour looking for you!

[@vimbainasheeileenpencil]

simple and precise. You are indeed a Dr, much respect.

[@EugeneOLoughlin]

:-)

[@mclim866]

Thank you so much for this! I managed to miss this lesson in class and this is so helpful!

[@prosimulate]

Wow, I sat through a 2 hour lecture with notes straight out of standard stats book. This was epic! Explained so you understand it, not so you have to burn it into your head. There should be something called "KZbin University". Thanks so much Sir!

[@EugeneOLoughlin]

:-)

[@19woody99]

LITERALLY THE BEST VIDEO!!! Thanks so much. Made it look so simple and methodical

[@ankitabiswas1496]

Thank you so much...now I realize how easy it was....at first I was afraid of this...but now there is no confusion hereafter. 😃

[@airebella-oceanwaves4502]

You are a Smart Professor, Thank you for posting this video. It helped me gain a thorough understanding of how to do Chi-Square Test by hand. Thank You.

[@daniellacollison8945]

THANK YOU SO MUCH

[@pevivirtudazo4958]

he's the best professor! thanks a lot sir. you're a great help.

[@beccarman7628]

Extremely helpful! Thankyou so much for taking the time to film it.

[@rosesgcld3760]

Omg thank you so much this helped me a lot in ap bio..I’m doing online school and I accidentally slept through my ap class so I had no clue how to do this YOU SAVED ME SO MUCH THIS IS WAY EASIER THAN I THOUGHT

[@charmaine7301]

thankyou sir! you've explained this in a very detailed yet simplistic way...

[@axzy7800]

Dude! My teacher just seems to complicate these small things. You are amazing! Thank you!

[@haydizzle13]

Thank you for this sir. I have not been able to understand this but you have explained it in such a clean and simple way. I commend you for helping us all out

[@itzboyon6983]

The best teacher of Stats

[@cicada3312]

thank you thank you so much ...it took my teacher weeks to explain this and i did not understand ...IT TOOK YOU ONLY 7 MINUTES to explain this and i understood ...genius ..thank you sooooo much "-"

[@DivineVortex]

Oh my gosh! So so helpful to see it in this manner! Thank you for writing it out in pencil/pen... thanks 🙏

[@henrifanda4784]

love your simple but spot-on explanation

[@hannaholszewski4880]

This has helped me refresh for the ap exam tomorrow thank you!! Very easy to follow and perfect amount of time!

[@jclohesy]

Why didn't I have you to teach me ? Brilliantly clear, no hiding behind jargon, thank you!

[@Missioncse2025]

Thank you sir..... I'm from India.... But only you saved me from tomorrow's exam rather than others. This is very helpful video.

[@Tactical_DZ]

Thank you my friend, very helpful. You helped me with my Business Statistics class, God bless!

[@georgiamorris5519]

eugene, you have saved my life. i love you.

[@EugeneOLoughlin]

:-)

[@ag4study957]

Best video and easy to follow explanation. I’m grateful!!

[@saabastiana4111]

u are a life savior, with gratitude!

[@wryaoi3548]

Easiest explanation I have found. Thank you very much for this!

[@deeewiit9341]

I've got an assignment due in a few hours and you just saved my ass, thank you sir.

[@gideonmaiyo134]

got a test tomorrow...its been so helpful..thanks so much

[@angelbinoy6074]

thank you sir for making the chi square test so easy to understand and accessible

[@Cruznick06]

Thank you so much for this simple and to the point tutorial. You are a lifesaver!

[@MrAlgublan]

Very Helpful. You have a amazing style in conveying the lesson.

[@chris5321]

Another excellent explanation from the good Dr. Greetings from Brisbane Australia.

[@EugeneOLoughlin]

:-)

[@kaze6135]

@@EugeneOLoughlin how is -67^2 = 2,209

[@EugeneOLoughlin]

Hi @@kaze6135, The calculation (at 4:01 in the video) is -47^2 = 2,209. Apologies if my hand-written "4" looks like a "6". Dr E.

[@rosariotorres8445]

Thank you so much sir for sharing your expertise about chi square. It gives me knowledge in solving my activity. God bless!!!!

[@panoramicview698]

Beautifully done. Excellent teacher 👏

[@AnthonyMartinez-jo8qm]

That was truly helpful. Simple and straight to the point. Thank you very much!!

[@ethanw2390]

Just wanted to say thanks from an AP Bio student

[@phillipdoan9919]

Thank you for taking your time making a very informative video. I caught my mistake at 12:03 am before I turn in my lab report tomorrow morning.

[@nclcoffey12]

extremely easy to follow! thanks a mill for the video Eugene you've saved me in an exam!

[@maxpercer7119]

Technically the alternative hypothesis is that one or more of the proportions of suits are unequal (they dont all have to be unequal). Great video.

[@kacyk7824]

Thank you for the thorough explanation.It was very helpful. However, at the very beginning , how did you come up with the alpha value =0.05 ? was it given ? or will it be given ? Also, if the X squared value is greater than the critical, will it always reject they hypothesis > Thank you.

[@onmarti]

The alpha value of 0.05 is the standard value of the significance level. When the significance value is not stated, it is usually assumed that 0.05 will be used. The x^2 value is the statistical value of this test, and therefore, when a statistical value is higher than the critical value, the null hypothesis should always be rejected.

[@hailet4505]

95 percent is given

[@senorfootball2460]

Very good example, the most important thing to understand this.

[@carlmanzano9717]

thank you so much for the help!!! it's such a great help for my master's degree journey

[@gonikabhatia1988]

this was really great. hope you keep making such videos for us. thank you for this one.

[@pashafarms]

I have my stats exam tomorrow, wish i had discovered your videos a week ago i would've probably done well. Wish you had done a video on the diff between spearmans and pearsons though. Great video regardless!

[@khalidhjri8088]

Great teacher ever.

[@joydavilar4506]

OMG you are great!!! Twice you have untangled confusion for me! Wow!! A master indeed, so smooth so calm got it!

[@EugeneOLoughlin]

:-)

[@klarencekayeteodoro8401]

OMG. This video is precise and very useful. Thank you, Sir.

[@kosaisharfi1671]

Thank you very much !!! God bless you ! I needed this video !! Continue your EXcellent work !!! ❤❤💙💖💖💖💛💛💛💚💚💚💚

[@mohiiqbalmohammedabdul7024]

Loved it, feel more confident about chi-square test now. Thanks.

[@rruzgarr97]

I dont know if you still read these but this is amazing

[@EugeneOLoughlin]

:-)

[@athela2023]

Thank you so much, your explanation and setup on paper is wonderful!

[@xVzConTrolZz]

As a uni student who leaves things to the last minute. You really saved my life buddy :)

[@gerunasumbou8470]

Well explained to its simplest and very easy too understand for a first timer like me. Thank you so much. 🙏

[@mehfuz3657]

OMG I have seen many tutorials not like this thanks a lot .

[@thabelomushandana8901]

wow the way you explained it so perfect like I found this very easy

[@JustSayNatasha]

bless you. was very confused about this until i watched LOL

[@staceymeggs3041]

Do you by any chance tutor? You've explained it so simply!! Thank you!!!

[@gracehannahmooney6593]

This video just saved my life on an exam question! Thanks!

[@MomoLoonat]

wow. this really helped a lot with my second year stats course. Thank you Dr

[@henrg]

fascinating and easy to understand. Well done mate