## mariomintchev 2 years ago b1= r * (Sy/Sx) How do I get the number for r (correlation) given the averages of X and Y and their standard deviations?

1. mariomintchev

@asnaseer @bahrom7893 @iHelp @jim_thompson5910 @karatechopper

2. kuraby

Statistics? fun. $r = sxy/((sx)(sy))$ where sx and sy are you standard devaitions and sxy is:

3. kuraby

Which is the average of your means.

4. mariomintchev

im still a little confused. can you tell me how they got b1 based on the data presented?

5. mariomintchev

6. mariomintchev

@.Sam. @eyust707 @satellite73

7. satellite73

missing a lot of the page

8. satellite73

$S_{xy}=\frac{1}{n-1}\sum_{i=1}^n(x_1-\overline{x})(y_1-\overline{y})$ i can understand, we just need these numbers

9. mariomintchev

well then ill upload it as an excel file rather than a PDF because PDF gets choppy

10. mariomintchev