Question

8.5 The following are the heights (measured to the nearest 2 cm) and the weights( measured to the nearest kilogram) of 10 men. Height 162 168 174 176 180 180 182 184 186 186 Weight 65 65 84 63 75 76 82 65 80 81 For 10 women: Height 152 156 158 160 162 162 164 164 166 166 Weight 52 50 47 48 52 55 55 56 60 60 Separately for each group, men, and women: a) Draw a scatter diagram to show a possible association between the weight (used as the dependent variable) and the height. Check to see if a linear model is justified. b) Estimate the regression parameters , the weight for a subject who is 160cm (does gender have an effect on this estimate? ). Draw the regression line c) Test to see if the two factors are independent ; state your hypothesis and choice of test size. d) Calculate the coefficient of determination and provide your interpretation e) Is there evidence of an effect modification? ( Compare the two coefficients of determination/correlation informally).

          8.5 The following are the heights (measured to the nearest 2 cm) and the weights( measured to the nearest kilogram) of 10 men.

Height 162 168 174 176 180 180 182 184 186 186
Weight 65 65 84 63 75 76 82 65 80 81

For 10 women:

Height 152 156 158 160 162 162 164 164 166 166
Weight 52 50 47 48 52 55 55 56 60 60

Separately for each group, men, and women:

a) Draw a scatter diagram to show a possible association between the weight (used as the dependent variable) and the height. Check to see if a linear model is justified.
b) Estimate the regression parameters , the weight for a subject who is 160cm (does gender have an effect on this estimate? ). Draw the regression line
c) Test to see if the two factors are independent ; state your hypothesis and choice of test size.
d) Calculate the coefficient of determination and provide your interpretation
e) Is there evidence of an effect modification? ( Compare the two coefficients of determination/correlation informally).

8.5 The following are the heights (measured to the nearest 2 cm) and the weights( measured to the nearest kilogram) of 10 men.

Height 162 168 174 176 180 180 182 184 186 186
Weight 65 65 84 63 75 76 82 65 80 81

For 10 women:

Height 152 156 158 160 162 162 164 164 166 166
Weight 52 50 47 48 52 55 55 56 60 60

Separately for each group, men, and women:

a) Draw a scatter diagram to show a possible association between the weight (used as the dependent variable) and the height. Check to see if a linear model is justified.
b) Estimate the regression parameters , the weight for a subject who is 160cm (does gender have an effect on this estimate? ). Draw the regression line
c) Test to see if the two factors are independent ; state your hypothesis and choice of test size.
d) Calculate the coefficient of determination and provide your interpretation
e) Is there evidence of an effect modification? ( Compare the two coefficients of determination/correlation informally).

Added by Michele T.

Question

Please give Ace some feedback