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A regression analysis was performed to determine if there is a relationship between hours of TV...

A regression analysis was performed to determine if there is a relationship between hours of TV watched per day ( x ) and number of sit ups a person can do ( y ).

The results of the regression were:

y=ax+b

a=-1.057

b=30.632

r2=0.657721

r=-0.811

Use this to predict the number of sit ups a person who watches 3 hours of TV can do, and please round your answer to a whole number: ________

math   Statistics-And-Probability   
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Answer #1

For x = 3:

Predicted value of y = -1.057*3 + 30.632 = 27.461 = 27 [Rounded off to nearest whole number]

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