## Course description

This course provide step-by-step practical guide for **comparing means of two groups in R** using **t-test** (parametric method) and **Wilcoxon test** (non-parametric method).

**Comparing one-sample mean to a standard known mean**:- One-Sample T-test (parametric)
- Wilcoxon Signed Rank Test (non-parametric)

**Comparing the means of two independent groups**:- Independent Samples T-test (parametric)
- Wilcoxon Rank Sum Test (non-parametric)

**Comparing the means of paired samples**:- Paired Samples T-test (parametric)
- Wilcoxon Signed Rank Test on Paired Samples (non-parametric)

Additionally, we describe the **sign test**, an alternative to the *paired-samples t-test* and the *Wilcoxon signed-rank test*, in the situation where the distribution of differences between paired data values is neither normal (in t-test) nor symmetrical (in Wilcoxon test).

#### Related Book

Practical Statistics in R II - Comparing Groups: Numerical VariablesVersion: Français

## No Comments