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ISYE 6414 Regression Modules 1-2 2025 Questions and Answers Assuming that the data are normally distributed, under the simple linear model, the estimated variance has the following sampling distribution: - --CORRECT ANSWER--Chi-squared with n-2 degrees of freedom. The fitted values are defined as? - --CORRECT ANSWER--The regression line with parameters replaced with the estimated regression coefficients. The estimators fo the linear regression model are derived by? - --CORRECT ANSWER--Minimizing the sum of squared differences between the observed and expected values of the response variable. The estimators for the regression coefficients are: - --CORRECT ANSWER-Unbiased regardless of the distribution of the data. The assumption of normality: - --CORRECT ANSWER--Is needed for the sampling distribution of the estimators of the regression coefficients and hence for inference. The estimated versus predicted regression line for a given x* - --CORRECT ANSWER--have the same expectation. ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1