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

Question

The results of the regression were:

y=ax+b

a=-1.077

b=30.98

r2=0.744769

r=-0.863

Use this to predict the number of situps a person who watches 13.5 hours of TV can do (to one decimal place)

Answer 1

Oliver,

The regression equation is y=-1.077x+30.98 x= hours watching tv y= no of situps

y=(-1.077)(13.5) + 30.98 = 16.4 sit ups

Hope this helps

Jim