Pearson's Product Moment Correlation Coefficient - The formula | ExamSolutions
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- Опубликовано: 21 авг 2024
- Pearson's Product Moment Correlation Coefficient (PMCC) can be easily evaluated on many scientific calculators but in this video I show you the formula in case this function is not available. The coefficient is given by the letter r and represents the strength of fit of a set of observations on a scatter diagram to a straight line.
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I loved this video so much! I struggled to understand the equation the way my professor taught it and this is VERY useful!! Thank you for this! :)
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I actually have to use Pearson's product moment correlation for my thesis, so this has provided some pretty useful information. Thank you so much for putting this up!
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Thank you for your explanation. This has helped me tremendously!
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Thanks that was really helpful I understand it better than my boring teacher
Great explanation! Have course work due in soon but didn't understand PMCC but this video helped me a lot!!! THANKS!!!!
Good luck with the coursework
Calculater Way:
Mode
STAT
A+BX (2)
Enter Values (X =, Y =)
AC
Shift Stat (1)
REG (7)
r (3)
=
Answer :)
Each Line represents a button pressed, my example was done on Casio fx-83ES
To restart
Mode
Comp (1)
Done :)
Very useful, will help me with my Stats exam next week! Cheers.
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Yep
Sorry but I don't have a video on this. I must say I have never heard of the coefficient of determination r^2. Perhaps someone else reading this may have an idea?
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Thank you! Since this is a sample correlation, shouldn't we divide by n -1 and not N (which would be for population)?
The increase in the observed grades in math are related in the increase of the observed grades of physics? (which would make total sense) .95
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im still confused why we use that equation. what is the equation actually doing and why does it work
Thank you:)
Do we need to bother with formulas if we can do it on the casio calculator?
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Good
Are the formulae for r, Sxy, Sxx and Syy given in the formula book for the Edexcel exam board
So so so hepfullll
sir , my formula is different from yours i multiplied (n) with xy and and other figure, and you have divided it but in the end the answer is same is it alright ?
sick me why all squared. thanks a lot for the good explanation :)
Thankyou, you have helped so much!
Cool
nice presentation easy to follow, should there of been a plot at x10,y9?
+Josh Peacock Thanks, and yes well spotted. Does not alter the answer though.
is this the same thing as the Pearson's product-moment correlation coefficient? I need to know for my IB Math Studies IA cause Chi Square is not going to work with my data.
what does the s at the start stand for?
What would r equal if there was a perfect (or near-perfect) straight horizontal line? thanks :)
On a calculator:
MODE - STAT - A+BX
ENTER VALUES
AC-SHIFT - REG - R
sorted ;)
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Cool
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That's good. Well done.
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Perfect
@hamidbcu yes
Is the PMCC the same as Correlation Coefficient or are they different?
They are the same thing
muy bien
@omar3211 Yes
But thank this really helped me 👍
is there a video on coding?
Ok thanks
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Thanks sir
Great stuff
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I need indirect method
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Sorry, not at the moment
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