Having Obtained a Scatterplot to Inspect the Data, You Suspect

question 18

Multiple Choice

Having obtained a scatterplot to inspect the data, you suspect that the results for participants 4 and 17 are outliers. What should you do?

• A) Remove the cases so that the model is more representative of the majority of observations.
• B) Perform a series of diagnostic tests on the data such as Cook's distance or Mahalanobis distance.
• C) Leave the data points in and incorporate the Fick reducer variable.
• D) Rerun the analysis without the observations in to see how the regression model is affected.

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