Outliers within groups

Like Outliers, but each value is judged against the distribution of its own group rather than the whole sample.

• Choose the value column(s) and a grouping column.

• A row is flagged if it is an outlier (IQR or Z-score) within its group on any selected column.

Useful when groups differ in level or spread. Flagged rows appear as checkboxes under Remove: (all ticked); untick any to keep that respondent, and previewing the data shows the removed rows in red. The step is also toggleable.