Suppose that a researcher, using data on class size (CS) and average test scores from 93 third-grade classes, estimates

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Suppose That A Researcher Using Data On Class Size Cs And Average Test Scores From 93 Third Grade Classes Estimates 1 (122.72 KiB) Viewed 26 times

Suppose that a researcher, using data on class size (CS) and average test scores from 93 third-grade classes, estimates the OLS regression TestScore = 489.176 + ( − 5.4708) × CS, R² = 0.09, SER = 10.8. (Round your response to two decimal places.) A classroom has 25 students. The regression's prediction for that classroom's average test score is Last year a classroom had 22 students, and this year it has 26 students. The regression's prediction for the change in the classroom average test score is The sample average class size across the 93 classrooms is 20.12. The sample average of the test scores across the 93 classrooms is (Round your response to two decimal places.) (Hint: Review the formulas for the OLS estimators.) (Round your response to two decimal places.) (Hint: Review the formulas for the R² and SER.) (Round your response to one decimal place.) The sample standard deviation of test scores across the 93 classrooms is