[Verse 1] Factorial ANOVA takes the stage Two factors dancing It's all the rage Main effects They stand alone But interaction's where the seeds are sown [Prechorus] If lines on the plot criss and cross Your simple story takes a loss [Chorus] Oh it's interaction The twist in the tale When one factor’s story starts to derail You can't ignore it It’s no small feat Factorial ANOVA Where worlds compete [Verse 2] Repeated measures One group’s the key Same folks tested Times one Two Three Control the noise The within-group flair Watch the changes Compare what's there [Prechorus] Sphericity's a word you can't evade Mauchly’s test decides the grade [Chorus] Oh it's repeated The rhythm of time Tracking the shifts in a single line Each subject’s voice A thread so tight ANOVA shows what’s wrong or right [Bridge] Enter ANCOVA, adding a layer deep Where covariates craft secrets they keep To "control for" a variable's silent call Adjust for what’s hidden, standing tall [Final Chorus] It's the ANOVA symphony, vast and wide From factorial paths to time's repeated tide ANCOVA's art reveals what's concealed Three forms we've shared, yet many remain unsealed Oh, explore further, the methods are grand Analysis awaits in statistical land
