- 8 Points The Superintendent Of An Elementary School District Must Decide Whether To Hire Additional Teachers And She W 1 (171.9 KiB) Viewed 39 times
prediction for that classroom’s average test score?
b. Last year a classroom had 19 students, and this year it has
23 students. What is the regression’s prediction for the change in
the classroom average test score?
(8 points) The superintendent of an elementary school district must decide whether to hire additional teachers and she wants your advice. If she hires the teachers, she will reduce the number of students per teacher (the student-teacher ratio) by two. She faces a trade-off. Parents want smaller classes so that their children can receive more individualized attention. But hiring more teachers means spending more money, which is not to the liking of those paying the bill! So she asks you: If she reduces the average class size by two students, what will the effect be on standardized test scores in her district? Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: TestScore = 520.4 – 5.82 X CS, R2 = 0.08 a. (4 points) A classroom has 22 students. What is the regression's prediction for that classroom's average test score? b. (4 points) Last year a classroom had 19 students, and this year it has 23 students. What is the regression's prediction for the change in the classroom average test score?