Elucidate what percentage of the variation in salary is, Ask an Expert

Economics

The following regression results relate to a study of the salaries of public school teachers in Midwestern city.
Variable coefficient standard error t-ratio
Constant 20,720 6,820 3.04
EXP 805 258 3.12
R -squared = 0.684, n=105, standard error of estimate = 2000
EXP is the experience of teachers in years of full-time teaching

A. What is the t -ratio/3.12/ for EXP? Does it indicate that experience is a statistically significant determinant of salary if a 95%confidence level is desired?

B. Elucidate what percentage of the variation in salary is explained by this model?

C. Describe the point estimate of salary for a teacher with 20 years of experience?

D. What is the approximate 95% confidence interval for point estimate from part (C)?

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Business Economics, Economics

Category:- Business Economics
Reference No.:- M9222374

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