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The Chi-square distribution explained, with examples, simple derivations of the mean and the variance, solved exercises and detailed proofs of important results. Stat Lect Index > Probability distributions
31 maj 2022 · Use the table below to find the chi-square critical value for your chi-square test or confidence interval or download the chi-square distribution table (PDF). The table provides the right-tail probabilities.
23 maj 2022 · Calculate the chi-square value from your observed and expected frequencies using the chi-square formula. Find the critical chi-square value in a chi-square critical value table or using statistical software.
20 maj 2022 · Chi-square distributions start at zero and continue to infinity. The chi-square distribution starts at zero because it describes the sum of squared random variables, and a squared number can’t be negative. The mean (μ) of the chi-square distribution is its degrees of freedom, k.
29 sie 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.
6 sty 2020 · What is the Chi-Square Distribution Table? The Chi-Square distribution table is a table that shows the critical values of the Chi-Square distribution. To use the Chi-Square distribution table, you only need to know two values: The degrees of freedom for the Chi-Square test; The alpha level for the test (common choices are 0.01, 0.05, and 0.10)
In probability theory and statistics, the chi-squared distribution (also chi-square or -distribution) with degrees of freedom is the distribution of a sum of the squares of independent standard normal random variables.
