Assumptions

In the Assumption tab, several tests can be conducted to check whether the assumptions for the parametric tests are met. One possibility is to create diagnostic plots as shown below. The results indicate that the assumptions for parametric models are reasonably satisfied.

• Residuals are approximately normally distributed.
• Variance is relatively stable across fitted values.
• No extreme outliers or influential observations are present.

Therefore, a parametric model is appropriate for this analysis.