Chi-squared distribution, showing χ2 on the first axis and p -value (right tail probability) on the second axis. A chi-squared test (also chi-square or χ2 test) is a statistical hypothesis test used …

May 23, 2022 · A Pearson’s chi-square test is a statistical test for categorical data. It is used to determine whether your data are significantly different from what you expected.

Oct 2, 2025 · Chi-square is a statistical test used to examine the differences between categorical variables from a random sample in order to judge the goodness of fit between expected and …

Dec 15, 2025 · This tutorial will guide you through the fundamentals of the Chi-Square test, including its formula, different types, and real-world applications. By the end, you'll understand …

Nov 27, 2025 · Chi-squared test, a hypothesis-testing method in which observed frequencies are compared with expected frequencies for experimental outcomes. In hypothesis testing, data …

Aug 2, 2025 · Chi-squared test, or χ² test, helps in determining whether these two variables are associated with each other. This test is widely used in market research, healthcare, social …

Aug 29, 2023 · The Chi-square test is a statistical method used to determine if there's a significant association between two categorical variables in a sample.

We use the Chi-Square Test! Note: Chi Sounds like "Hi" but with a K, so it sounds like " Ki square" And Chi is the greek letter Χ, so we can also write it Χ2. Important points before we get …

A chi-square test for independence compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical …

Welcome to this comprehensive guide on Chi‑Square (χ²) tests, essential tools in statistics for analyzing categorical data.