Building the Regression Model III: Remedial Measures
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چکیده
After diagnose the model and something was detected, there needs an adjustment for model fitting. For example, if non-equal variance happens, either use the transformation of response or other choices. If there are influential points in the dataset, we may try to avoid its influence by different fitting method (Robust Methods). If the relation between response and predictors are absolute not linear, we may think of using non-parametric method. Unequal Variances Remedial Measures: Generalized Least Square method. Consider the general regression model:
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