lesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity checklesson 5 of 5 · mission: statistical sanity check
Complete the core of sanity_report: count, sorted amounts for range/median, and the majority-class baseline.