Dec 15, 2025 · Learn about the Chi-Square test, its formula, and types. Understand when to use the tests, chi-square distributions, and how to solve Chi-Square problems.

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 …

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.

May 3, 2025 · Learn how to use the chi-square test for categorical data analysis—goodness-of-fit, test of independence, assumptions, and step-by-step exp.

Comprehensive lecture notes on Chi-Square tests (χ²), including goodness-of-fit and test of independence. Features interactive visualization, manual calculation examples, R code, …

So how do we calculate this p-value? 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. …

Oct 2, 2025 · A chi-square (χ2) statistic is a test that is used to measure how expectations compare to actual observed data or model results.

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 …

Aug 25, 2021 · This tutorial provides several examples of how Chi-Square tests are used in real life.

Aug 3, 2023 · A Chi-square test is performed to determine if there is a difference between the theoretical population parameter and the observed data. Chi-square test is a non-parametric …