A family therapist wants to predict the number of children in a family based on the family's household income. The therapist thinks that a higher income will be associated with having more children on average. The outcome variable is Child (the number of children in a family) and the predictor variable is Income (the household income in thousands of U.S. dollars).

He runs the following simple linear regression:

Call : 1m(formula = Children ~ Income, data = data) Residuals : Min 1Q Median 3Q Max -1. 5209 -1. 3308 -0. 3428 0. 6685 6.6576 Coefficients : Estimate Std. Error t value Pr(>|t|) (Intercept) 1. 296704 0. 096197 13.480