#summary-plot

Question 1: Single choice

In a SHAP summary plot, feature A's SHAP values span a much wider range than feature B's, mainly because of a few extreme points; most of A's values sit near zero. Is A therefore the more important feature in the sense of permutation importance?

Not necessarily; a few outliers can set the range of SHAP values1
Yes; the width of a feature's range of SHAP values approximates its permutation importance2
Yes, as long as the extreme points have high feature values (pink dots)3
No, because SHAP values and permutation importance always rank features differently4

Timed test