Which of the following statements is true? I. Random scatter in the residuals indicates a linear model. II. If two variables are very strongly associated, then the correlation between them will be near 1 or -1. III. Changing the units of measurement for x or y does not change the correlation coefficient.
Added by Jose Francisco T.
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Step 1: Random scatter in the residuals actually indicates that the linear model may not be the best fit for the data, as it suggests that there may be some pattern or relationship that the model is not capturing. Show more…
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