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What is Two Variable Regression Analysis about?

This chapter introduces the concepts of population regression function (PRF) and sample regression function (SRF) in two variable linear regression analysis. It uses a hypothetical example of weekly family expenditure and income for 60 families to illustrate the PRF as the expected value of expenditure given different income levels. The chapter then defines the PRF mathematically as a linear function of income and error term, and explains the SRF estimated from sample data differs from the true PRF due to t

Author

Samina Ahmeddin

Language

EN