[Chorus] No assumptions No bell-shaped line Nonparametrics work just fine When data's wild When shapes won't play We’ve got tools to save the day [Verse 1] Chi-square test, it's on the scene To check fit with data keen Count the observed, find what's true Compare with expected, see it through [Verse 2] Chi-square test of independence finds Connections hidden, in data it mines Evaluates ties across the grid Expected counts vs. what you did Crosstabs ready, apply the test P-values guide you to assess [Chorus] No assumptions No bell-shaped line Nonparametrics work just fine When data's wild When shapes won't play We’ve got tools to save the day [Verse 3] Mann Whitney's here, with strength in hand Ranks the medians, understands When t-test fails, assumptions breached Non-normal paths, the test can reach Two samples judged without constraints Wilcoxon sums show no complaints [Verse 4] Kruskal-Wallis steps into view For three or more groups, it’s true Ranks the data, tests for ties When variance spreads, it defies Use when samples aren't aligned No normal curve, peace of mind [Bridge] Nonparametric tests, a friend indeed When normality's gone, they're what you need But beware, they sometimes lack the might Power's low when data takes flight Complexity whispers in the night Keeping it simple, yet staying in the fight [Chorus] No assumptions No bell-shaped line Nonparametrics work just fine When data's wild When shapes won't play We’ve got tools to save the day
