Calculating correlation coefficient r | AP Statistics | Khan Academy

Awesome explanation! Thank you.

Can you explain how is 2/3 = 0.816?

Great video! Thanks sal!

Thanks I love statistic.

Simply explained
"I'm happy there are only 4 pairs here"... hahaha... Calculating repetitive stuffs manually can be tiring

Explaining correlation in terms of z-scores is super helpful thank you 🙏

Now if I'm being asked to test for hypothesis

I didnt understand why we used z scores to calculate the correlation coefficient. Can someone explain?

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Glory to God this guy is blessing my life!!!

How did he get r=1/3

What is the intuition behind (2,3) having a negative contribution to R?

Ok I am confused that how he took out standard deviation of x ? Like HOW?!! SOMEONE HELP!!!

I finally understand r-score! Thank you thank you thank you!!!!! I have a test in 2 days on this and it finally clicks

I'm so confused tho because my professor gave a COMPLETELY different formula for correlation coefficient; r=(meanx)(Z score of y)

The line should actually go through the mean and the intersections of the standard deviation lines right?

perfectly explained, thank you very much!

Thank you so much for explaining so simple and accurate. Hello, greetings from undip college student

yeah I give up I don't understand it