stat_final_review_2_fall09

# stat_final_review_2_fall09 - 1 Stat Final- Review #2 #1)...

This preview shows pages 1–3. Sign up to view the full content.

1 Stat Final- Review #2 #1) Suppose that a researcher, using data on class size ( CS ) and average test scores ( TS ) from 202 third-grade classes, estimates the OLS regression: S T ˆ = 600 – 6×( CS ) R 2 = 0.8, SER = 7 a) What is the sample variance of test scores across the 202 classrooms? b) What is the sample standard deviation of test scores across the 202 classrooms? c) What is the explained sum of squares (ESS) of this regression?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
#2) estScore T ˆ = 690 - 4.3 × STR n= 600 (12.2) (2.2) a) In the regression above, robust standard errors appear in parentheses. Calculate the test statistic for the test of H 0 : β 1 = 0 against the two-sided alternative H a : β 1 0? Round your final answer to two decimal places if necessary. b) What is the P-value for this test? Calculate the P-value using the standard normal table. Use your final answer from part a. Round your answer to four decimal places. c) Do you reject the null hypothesis at the 5% level?
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/01/2010 for the course PAM 2100 taught by Professor Abdus,s. during the Spring '08 term at Cornell.

### Page1 / 5

stat_final_review_2_fall09 - 1 Stat Final- Review #2 #1)...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online