Welcome to On Statistics

When exploring the fascinating world of statistics, researchers often encounter the challenge of multiple comparisons. Imagine studying the effects of various fertilizers on plant growth, performing multiple tests to compare each pair of groups. Each test carries a risk of declaring a difference significant even if it arises by chance (Type I error). Addressing this…

In the realm of statistical analysis, where understanding group differences holds paramount importance, Tukey’s Honest Significant Difference (HSD) emerges as a powerful tool. This post-hoc test delves into the nuances of comparing multiple groups after a significant ANOVA result, guiding you through its application and interpretation. Setting the Stage: When HSD Takes Center Stage Imagine…

In the realm of research, understanding how variables evolve over time or under different conditions holds immense value. Enter repeated-measures ANOVA (RM ANOVA), a powerful statistical tool designed to analyze data collected from the same subjects across multiple time points or conditions. This guide delves into the intricacies of RM ANOVA, equipping you with the…