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.

Question

Quizplus · Accepted Answer

Performing diagnostic tests like Cook's distance or Mahalanobis distance helps to objectively determine the influence of potential outliers on the model before deciding on any further action.

Having Obtained a Scatterplot to Inspect the Data, You Suspect