This repository contains mini-projects that I worked on to consolidate my knowledge on hypothesis testing.
| Test Name | Use Case | Data Type | Notes |
|---|---|---|---|
| One-sample t-test | Compare sample mean to known population mean | One numerical variable | Assumes normal distribution |
| Two-sample t-test | Compare means between two independent groups | Numerical, two groups | Use Welch’s t-test if variances unequal |
| Paired t-test | Compare means before/after (same subjects) | Numerical, paired samples | Repeated measures |
| Z-test for proportions | Compare sample proportion to population proportion | Categorical (binary) | Large sample size |
| Two-proportion z-test | Compare proportions between two independent groups | Categorical (binary) | Large samples |
| Chi-square test | Test association between two categorical variables | Categorical | For contingency tables |
| ANOVA | Compare means among 3+ groups | Numerical with categorical groups | Assumes equal variances |
| Mann-Whitney U test | Compare medians of two independent groups | Numerical, not normally distributed | Non-parametric |
| Wilcoxon signed-rank test | Compare paired samples (non-parametric) | Numerical, paired data | Alternative to paired t-test |