Suppose that a residual plot shows a pattern of non-constant variance. Which of the following strategies might be used to improve the fit of the regression model? Ignore the problem and use the regression model anyway. Nothing -- regression cannot be used in this case. Transform the Y variable using either a log or square-root transformation. Fit a logistic regression model instead.
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Ignoring the problem and using the regression model anyway is not a good strategy, as it may lead to incorrect conclusions and predictions. Show more…
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