Chi-Square Curve - Definition & Meaning
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The distribution of the chi-square statistic is called the chi-square distribution. In a statistical experiment of a random sample of size n, having a standard deviation equal to σ, the standard deviation of the sample is equal to s.
![](https://www.researchgate.net/publication/267988711/figure/fig1/AS:295400146784260@1447440291400/A-detail-of-the-Chi-square-distribution-and-its-tails-used-in-this-example.png)
A detail of the Chi-square distribution and its tails, used in
Chi-Squared Distribution -- from Wolfram MathWorld
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Chi-Square (Χ²) Distributions
![](https://www.math.net/img/a/probability-and-statistics/hypothesis-test/chi-square/chi-square-distribution.png)
Chi square
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Chi-Square Distribution Definition, Graph & Examples - Lesson
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Chi-Square (Χ²) Distributions
![](https://www.math.net/img/a/probability-and-statistics/hypothesis-test/chi-square/right-tailed-chi-square-test.png)
Chi square
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10.2 The Chi Square Distribution – Introduction to Statistics
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Chi-Square Calculator
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Chi-Square Goodness of Fit Test, Introduction to Statistics
![](https://www.researchgate.net/publication/276964817/figure/fig1/AS:614265107001364@1523463622433/Schematic-example-of-the-chi-square-test-on-the-Poisson-variable-by-comparing-the.png)
Schematic example of the chi-square test on the Poisson variable
![](https://i0.wp.com/statisticsbyjim.com/wp-content/uploads/2020/01/Chi-square_distribution.png?fit=576%2C384&ssl=1)
How the Chi-Squared Test of Independence Works - Statistics By Jim