Free statistics guides
Statistics guides
Plain-English, no-paywall guides on the concepts students get stuck on — hypothesis testing, p-values, choosing a test, and confidence intervals — with the same reasoning behind StatRise's 39 calculators, 54 lessons, and 660 practice questions.
Hypothesis Testing Explained: The Five Steps, Worked Through
A step-by-step walkthrough of hypothesis testing: null and alternative hypotheses, significance level, test statistic, p-value, and conclusion.
8 min read
What Is a P-Value? A Plain-English Explanation
What a p-value really means, what it does not, how it relates to the significance level, and the misinterpretations to avoid.
7 min read
How to Choose the Right Statistical Test
A framework for choosing the right statistical test: identify variable types, group count, and goal, then pick t-test, chi-square, ANOVA, or regression.
8 min read
Confidence Intervals Explained (Without the Jargon)
What a confidence interval really means: the confidence level, margin of error, its link to hypothesis tests, and the mistakes to avoid.
7 min read