The document provides an overview of the chi-square distribution and how it can be used for hypothesis testing. It discusses that the chi-square distribution is used to find critical values for determining the area under the curve for a given degrees of freedom. It also gives an example of how chi-square can be used to test if two variables such as keyboard type and time to learn typing are independent.
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4. Overview of the Chi-Square Distribution
• Table C in the AP Stats Formula Sheet shows critical
values of chi-square distributions for which a designated
area falls to the right of the critical value
Degrees of
Freedom
Area in the
right tail
Critical Values
5. 10.1 Chi-Square: Tests of
Independence and of Homogeneity
Chapter 10: Chi-Square And F Distributions
Part 1: Inferences Using the Chi-Square
Distribution