Table 11.16 comes from a regression analysis4 of y = number of children in family, x1 = mother’s educational level in years (MEDUC), and x2 = father’s socioeconomic status (FSES), for a random sample of 49 college students at Texas A&M University.

(a) Write the prediction equation. Interpret parameter estimates.

(b) Find R2, and interpret it.

TABLE 11.16 Sum of Squares Regression 31.8 Residual 199.3 b

(Constant) 5.25 MEDUC −0.24 FSES 0.02