Video for finding the covariance and correlation coefficient by hand.
Пікірлер: 162
@BakedBeanieSigel8 жыл бұрын
This is the best video I've seen on this topic so far... thanks
@kevinbrown86408 жыл бұрын
+Baked Bean Sigel Wow, thank you!
@danphillips85304 жыл бұрын
I agree
@harperkody4662 жыл бұрын
you probably dont care at all but does anyone know of a tool to log back into an instagram account? I was dumb forgot the account password. I appreciate any help you can give me.
@jadenace29362 жыл бұрын
@Harper Kody Instablaster =)
@harperkody4662 жыл бұрын
@Jaden Ace I really appreciate your reply. I found the site through google and im in the hacking process now. Seems to take quite some time so I will reply here later with my results.
@nackyding7 жыл бұрын
I haven't even completed the video (1/2 way through) and I can already say thank you! Clean, clear and straight to the point! Thank you!
@user-ns8rn8fu3z Жыл бұрын
How can we decide divided by N or N-1 ?
@chloekimball5365 жыл бұрын
Short and crystal clear. Exactly what I was looking for. Thank you!
@tyt68628 жыл бұрын
Very well done Kevin. Thanks for taking the time to do this. I needed a refresher and your delivery was excellent.
@BRUNNSPARK7 жыл бұрын
I have watched couple of videos, and so far you are the best. Perhaps for the newbies it would also be helpful to say that x bar is the mean of all x.
@rodrigoprisciliano91765 жыл бұрын
I have looked through countless videos now and by far yours is the best explained one! May the math gods bless your soul!!
@louaydiab93867 жыл бұрын
The best so far among all the videos I watched. Thank you
@robind9996 жыл бұрын
Covariance and correlation puzzled me for a long time, but your temp and ice cream demo really resolve my puzzle here. thank you very much.
@mushvigbayramzade74466 жыл бұрын
Thank you very much. This is the best video I have ever seen so far on this topic. Clear and precise explanation. Thanks a lot.
@willbrockman97986 жыл бұрын
Very helpful. I have had one stat class in college and a class currently that uses stats. This has been more helpful than any teaching on stats that I have received yet.
@narcalselena3 жыл бұрын
Thank you Kevin!! I'm in quantitative Econ analysis and this was extremely helpful!
The BEST video on this topic.Wish you were my teacher
@petter90787 жыл бұрын
Fantastic, just fantastic. Thank you
@bladerjam716 жыл бұрын
Thanks so much! I don't get many examples in class so I have no idea how to do this but your video makes it super simple and understandable! I have an exam in 2 days so this is a big help! Thanks Kevin!!!! :D
@pnaveen19875 жыл бұрын
Very clear explanation on covariance and correlation. Thank you for your nice work.
@victorserras6 жыл бұрын
Perfect explanation, very concise and clear. Thanks!
@mrlalit55 жыл бұрын
That was a great explanation! Short and simple.
@itsmmada6 жыл бұрын
Awesomw awesome awesome. I am from Kyrgyzstan, you can be proud of yourself. Thank you very mcuh
@_amit_gupta_7 жыл бұрын
Hi Sir, Thank you for this enlightening video, after so much web surf finally you cleared the doubts.
@Polighosh2 жыл бұрын
The best video so far! Thank you
@undercover_secret_agent17268 жыл бұрын
Excellent, well explained and really helpful. Thank you
@edgargarcia1737 жыл бұрын
You are the man, Kevin. having Dyslexia, ADD and ADHD combined, had made this very simple and understandable
@kevinmaria20027 жыл бұрын
Thanks! :)
@RoxanaP567 жыл бұрын
this video helped me for my analytical chemistry exam thank you so much
@taylorz78757 жыл бұрын
you explained it perfectly, thank you
@3650days8 жыл бұрын
Very helpful. Thank you Kevin!
@josephmulenga29384 ай бұрын
Thank you for the well explained video. Kindly continue the good work
@melvinsebastian89896 жыл бұрын
Great video..awsome work!!!! perfect...keep it up
@NR-nu9uk7 жыл бұрын
GREAT! I understand this now! Thank you!
@goguzaum6 жыл бұрын
Aweosme video! Very a good work! Congratulations
@michelleparker56705 жыл бұрын
Thank you so much. The chart was very helpful!
@billionairevlog17755 жыл бұрын
Great Explanation!!! Thank you Sir.
@jchen35928 жыл бұрын
thank you, your explanation was very clear !!
@arajrao5 ай бұрын
That was really good. You paused in the middle of the whole thing just to discuss things conceptually, rather than keep plugging on with the math.
@leeragrandduke3 жыл бұрын
So how do you get the X bar?? Do you sum x and divide by number temperature figures
@ToyotaCorollaCE2 жыл бұрын
Great clear value. Thank you
@shihabmashfiq17826 жыл бұрын
you are awesome man ! loved it
@henryzulu5853 жыл бұрын
Thank you sir well explained video. Keep it up ❤️❤️
@inovationANAS5 жыл бұрын
Superb video..Thanks for being so clear
@lizaminasyan92553 жыл бұрын
thank youuu soooo much, i am so grateful for this amazing explanation.
@Angelica-lh1sj5 жыл бұрын
THIS IS SO HELPFUL THANK YOU
@ThePimp4dawin6 жыл бұрын
Nicely explained. Thank you!
@lv.qw10078 жыл бұрын
Thanks sir! Your explanation is so clear
@Outlier_G Жыл бұрын
I am at 3:35 and I can confirm that you are best than my prof in thousand different ways
@badianacortes8945 жыл бұрын
Thank you, you helped me to undestand it perfectly
@helenkirby25395 жыл бұрын
Great explanation, thank you.
@barovierkevinallybose10405 жыл бұрын
Do we divide by n-1 because we have a small sample?
@user-xi8sj1sq2c9 ай бұрын
thank you Kevin! You explain better than my university professor haha
@ilovefredreika8 жыл бұрын
Very clear and helpful!
@nitesh9037 жыл бұрын
thnk u so much sir .. u solved my issue . love from india
@EducationPoint20206 жыл бұрын
good Sir.... one good article live for 100 year.
@michaelmonte7429 Жыл бұрын
how do you get the xi and yi numbers????
@marziehdo67888 жыл бұрын
Thanks so much, well explained.
@user-gy5ot5pf1d Жыл бұрын
thank you for this brief explanation keep it up!
@hoanglh20077 жыл бұрын
excellent video :). Thanks a lot
@atnuitmoartiiaoln36718 жыл бұрын
I read somewhere that when you solve the summation in the numerator we get X*Y and X(mean)*Y(mean) , can you tell how does that happen, Where do the other two terms go?
@mathlogs Жыл бұрын
for covarience , divide by n-1 ? or n ?
@juaneproano47856 жыл бұрын
Easy to understand! Thank you
@QouteOfTheDay6 жыл бұрын
excellent explanation. thank you.
@firstkaransingh2 жыл бұрын
Very well explained. Thank you
@phv1610 жыл бұрын
Great video! Really has helped me to determine the relationship between my stocks and the market in my finance class. Thanks again for posting!
@kevinbrown864010 жыл бұрын
Thanks Paige!
@andreaviljoen9424 Жыл бұрын
This was so helpful thank you so much!
@postnetworkacademy Жыл бұрын
Clearly explained, difference between covariance and correlation.
@ashleyhayward28772 жыл бұрын
This was so helpful thank you!
@daegudude10485 жыл бұрын
Why does my book say formula for covariance is divided by x not x-1 like him?
@luswetimeshack31477 жыл бұрын
thanks alot...finally i understood the concept
@gracedialimas44593 жыл бұрын
I really understand this... thank you so much
@chaudiep82742 жыл бұрын
thank you so much for this. It's very understandable
@njjjmmma9 жыл бұрын
thanks alot (y) God bless you!
@Amit___rai5 жыл бұрын
What is correlation between x and 0.5x ?
@ellebeautyly50908 жыл бұрын
merci beaucoup sa ma vraiment aidé
@danielharis7 жыл бұрын
thank you very much, best explanation I got after a quick browse.
@kevinmaria20027 жыл бұрын
Thanks!
@piersanna88664 жыл бұрын
how do you know that xi and x equal to -7,5?? what are those numbers??
@ravitejamom6 жыл бұрын
Thank you ...u explained it well
@mohiramansurovna42957 ай бұрын
thanks for clear explanation ☺
@pinkyybchan8 жыл бұрын
Thanks for your demonstration. How do I interpret the co-variance, e.g. the strength of the its relationship and direction of relationship ?
@kevinbrown86408 жыл бұрын
+Pinky Chan Hi Pinky! That is the problem with the covariance...its interpretation is limited. It can only really tell you that a relationship is positive or negative (based upon whether it is a positive or negative value). BUT...you can use the covariance to figure out the correlation coefficient, which tells you much more.
@saami_jawaid2 жыл бұрын
It really helped me out
@NandishPatelV7 жыл бұрын
Very helpful. Thnx.
@SaraRuss-gb8sg4 жыл бұрын
I swear to g-d I didn’t understand anything until I came across this video. Thank you so much !!!!!
@hamedmohamed85942 жыл бұрын
Thank you.
@navendushekhar98118 жыл бұрын
before this video i know only how to solve for covariance,you let me to know the actual meaning of covariance, thank you sir
@cyndara886 жыл бұрын
Thank you!
@salimmuhammed_um4 жыл бұрын
excellent work
@passgyalsiakam9 жыл бұрын
this video came so clutch.. thanks my man
@TheWoundedDoctor9 жыл бұрын
Jeff Wong You bet Jeff!
@lailymedha595 Жыл бұрын
superb!
@alaaeltayeb57946 жыл бұрын
thank you bless you
@brigjay1236 жыл бұрын
that was just awesome
@albinohelper9 жыл бұрын
Hi Kevin, Great video! If the correlation coefficient value between x and y is around abs(.5) in my data, is that high enough to propose as an insight that is actionable in a real world business setting?
@kevinbrown86408 жыл бұрын
+Albert Ko Thanks Albert...it depends on the nature of what you are studying...in social sciences, for example, a cc of .5 or higher would be relatively high to suggest association between two variables. In other fields (e.g., medicine or even finance), this may not be high enough.
@lauragutierrez41127 жыл бұрын
Wow thank you!!!
@justicentow2157 Жыл бұрын
How did you get your xi, it should be explained to beginners
@charez88ify4 жыл бұрын
Thank you thank you :)
@itsnotallrainbowsandunicor15056 жыл бұрын
We can also correlate temps with not just ice cream consumption, but a rise in incidents related to lactose intolerance.
@MotaungFamilyMatter Жыл бұрын
Great video. I thought I heard music at the end there. Amapiano music :)
@veryeasyproblems3337 жыл бұрын
why didn't you show how you got the standard deviation
@sayeemhussain30908 жыл бұрын
taught a lot. thnx
@fatousamb26919 жыл бұрын
Hi Sir! Thank you a lot for your very interesting videos :) I am a little bit confused by the fact that sometime one devides by n sometime by n-1,how can we distinguish the diference between the two; i mean when do we have to divide by n only or by n-1?
@MrTehbigcheese9 жыл бұрын
n-1 is when you're doing it for a sample, and n when it's for population.
@fatousamb26919 жыл бұрын
Okey Sir,thank you :)
@rushabhbhatia40669 жыл бұрын
KINE KINE adding to that, samples are usually not a perfect representation of the population, hence there is more chances of the answer being slightly inaccurate. So to be on the safer side we divide by n-1 because DIVIDING by a SMALLER number gives you a BIGGER end result. which just means that you have a larger co-VARIANCE now. and since ,more variance = more fluctuations in data , we end up covering a larger risk than what we would have covered otherwise if it was divided just by 'n'.