At the Stock and Watson (Http://www

question 48

Essay

At the Stock and Watson (http://www.pearsonhighered.com/stock_watson)website, go to Student Resources and select the option "Datasets for Replicating Empirical Results." Then select the "California Test Score Data Used in Chapters 4-9" and read the data either into Excel or STATA (or another statistical program). First run a regression where the dependent variable is test scores and the independent variable is the student-teacher ratio. Record the regression R². Then run a regression where the dependent variable is the student-teacher ratio and the independent variable is test scores. Record the regression R² from this regression. How do they compare?

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