Table 8.5 shows the prepregnancy weights of 25 mothers and the birth weights of their children, both in kilograms [7].

a. Which would you use as the dependent variable and which as the explanatory variable in the regression model Y = α + βX + ε?

b. Draw a scatter diagram.

c. Use least squares to see if there is a positive or negative relationship.

d. Interpret your estimates of α and β.

Transcribed Image Text:

Mother Child Mother Child Mother Child Mother Child Mother Child 49.4 3.52 70.3 4.07 73.5 3.23 65.8 3.35 63.5 4.15 63.5 3.74 50.8 3.37 59.0 3.57 61.2 3.71 59.0 2.98 68.0 3.63 73.9 4.12 61.2 3.06 55.8 2.99 49.9 2.76 52.2 2.68 65.8 3.57 52.2 3.37 61.2 4.03 65.8 2.92 54.4 3.01 54.4 3.36 63.1 2.72 56.7 2.92 43.1 2.69