1. Frequency Distribution Graph
Create histograms and frequency tables to visualize the distribution of your data.
Create histograms and frequency tables to visualize the distribution of your data.
Check if your data follows a normal distribution (Shapiro-Wilk, Kolmogorov-Smirnov, QQ-plot).
Find the best power transformation to stabilize variance and make the data more normal-like.
Independent or paired t-test to compare means between two groups (with summary results).