Testing differences in means or medians across more than two groups

Testing differences in means or medians across more than two groups

Data analysis steps (including test for normality and equality of variances) when testing differences between groups using ANOVA and/or Kruskal Wallis.

Genotype Data Filtering and PCA Visualization in R: A Step-by-Step Guide This tutorial provides a step-by-step guide for filtering genotype data and performing Principal Component Analysis (PCA) using tidyverse, FactoMineR, and plotly. The workflow includes data preprocessing, quality filtering, and visualization of population structure using 2D and interactive 3D PCA plots.