6. 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 • CS, R2 = 0.08, SER = 11.5 What is the...

Please answer the following questions.

Extracted text: 6. 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 • CS, R2 = 0.08, SER = 11.5 What is the sample standard deviation of test scores across the 100 classrooms? (Hint: Review the formulas for the R- and SER). Your answer: First, we know SER=11.5, then SSR=|. (Round to 1 decimal place). Then, SST= |. (Round to 1 decimal place). Thus, the sample standard deviation of test scores sy (Round to 1 decimal place). %3D