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A regression was run to determine if there is a relationship between hours of TV watched...

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and the number of sit-ups a person can do (y). The results were: y = a+bx b = -0.79 a = 23.59 r2 = 0.6551

If a person watches 16 hours of television a day, predict how many sit-ups he can do. 10.95 Correct

What is the value of the correlation coefficient? Round to three decimal places. .809 - I need help with this. I did the square root of R2 and it was incorrect

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Answer #1

Given regression equation for two vanable x and x and y where x = hows of TV watched per day 7= no of sitasips a person can dso repression equation will be 7 = 23.59-0.79x o & for = 16 houng 23.59-0.79x16 10.95 le if a person person watches 16 hourste r by SA 0.79 since Oy and ox are (tre) quantity then from above we can conlcude that r must be Eve) so fo 0.809 will be co

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