The following model was fitted to a sample of 30 families in order to describe household milk consumption
y = B0 + BX1 + B2X2 + e
where
y = milk consumption, in quarts per week
X1 = weekly income, in hundreds of dollars
X2 = family size
The least square estimates of the regression parameters were as follows:
b0 = -0.025 b1 = 0.052 b2 = 114
The total sum of squares and regression sum of squares were found to be as follows:
SST = 162.1 and SSR = 88.2
a. Compute and interpret the coefficient of determination
b. Compute the adjusted coefficient of determination
c. Compute and interpret the coefficient of multiple correalation