The article cited in Example 14.10 also reported the fasting C-peptide levels (FCP, nmol/L) for the children in the study.

(Sample sizes are different here than in Example 14.10 due to missing data in the latter.) Use a Kruskal–Wallis test (as the article’s authors did) to determine whether true average FCP levels differ across these four populations of diabetic children.

Example 14.10

Diabetes group 1234 2 4 J 26 32 65 17 T 72.8 79.2 56.4 104.6