ISYE 6414 Regression Modules 1-2
Assuming that the data are normally distributed, under the simple linear model, the estimated variance has the following sampling distribution: - Chi-squared with n-2 degrees of freedom. The fitted values are defined as? - The regression line with parameters replaced with the estimated regression coefficients. The estimators of the linear regression model is derived by? - Minimizing the sum of squared differences between the observed and expected values of the response variable. The estimators for the regression coefficients are: - Unbiased regardless of the distribution of the data. The assumption of normality: - Is needed for the sampling distribution of the estimators of the regression coefficients and hence for inference. The estimated versu
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