Distribution of p-values when comparing two groups

An interactive visualisation of the distribution of p-values when comparing two groups

Interpreting confidence intervals

A blog about the visualisation of Confidence intervals

Interpreting Correlations: an interactive visualization

Correlation is one of the most widely used tools in statistics. The correlation coefficient summarizes the association between two variables. In this visualization I show a scatter plot of two variables with a given correlation. The variables are …

The t-distritbution and its normal approximation

I just published a new interactive visualization in my series of basic statistical concepts and techniques. This time I am trying to show how the t-distribution and the normal distribution differs, and how they become very similar for larger sample …

Understanding Statistical Power and Significance Testing: an interactive visualization

Much has been said about significance testing – most of it negative. Methodologists constantly point out that researchers misinterpret p-values. Some say that it is at best a meaningless exercise and at worst an impediment to scientific discoveries. …