Mike Wilde is president of the teachers' union for Otsego School District. In preparing for upcoming negotiations, he is investigating the salary structure of classroom teachers in the district. He believes that there are three factors that affect a teacher's salary: years of experience, a teaching effectiveness rating given by the principal, and whether the teacher has a master's degree (If yes, Masters = 1; if no, Masters = 0). Below is the regression output with missing entries for a random sample of 20 teachers.

ANOVA df SS MS Regression 903.1937916 Residual 91.36819635 Total Coefficients Standard Error t Stat Intercept 19.915192 1.916260295 10.39274 Years 0.8993794 0.087678763 Rating 0.153916 0.031440644 4.89545 Masters -0.6673082 1.213932811