[Verse 1] When your sample size drops below thirty souls And the population's curve remains unknown T-test steps forward, handles smaller goals Student's distribution makes the path your own Compare two means or test against a standard T-statistic whispers what the data's planned [Chorus] Z for large and normal, T for small and free Chi-square tests relationships, what will they be? F compares the variances, spreads them side by side Parametric assumes normal, non-parametric's your guide Test the hypothesis, let the numbers speak Statistical significance is what we seek [Verse 2] Z-test marches when your sample's thirty plus Population standard deviation known and clear Normal distribution, no need for a fuss Critical values at one-ninety-six appear One or two-tailed testing, alpha point-oh-five Z-score calculations keep your hopes alive [Chorus] Z for large and normal, T for small and free Chi-square tests relationships, what will they be? F compares the variances, spreads them side by side Parametric assumes normal, non-parametric's your guide Test the hypothesis, let the numbers speak Statistical significance is what we seek [Bridge] Chi-square examines independence and fit Categorical data dancing in its grid F-test compares two variances with wit ANOVA's secret weapon, variance amid When normality fails, go non-parametric Mann-Whitney, Wilcoxon, purely numeric [Verse 3] Parametric tests demand assumptions strict Normal distributions, equal variance too Non-parametric when data won't predict Rank-based methods see your analysis through Choose your weapon wisely, check assumptions first Statistical power quenches knowledge thirst [Chorus] Z for large and normal, T for small and free Chi-square tests relationships, what will they be? F compares the variances, spreads them side by side Parametric assumes normal, non-parametric's your guide Test the hypothesis, let the numbers speak Statistical significance is what we seek [Outro] Sample size and normality guide your choice Let the data sing with its statistical voice
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