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Introduction
Sample 1
Samples and Hypotheses
Sampling Distribution
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Distribution of Sample Means
Hypothesis Testing
Sample 1
Sample 2
Sampling Distributions
Mean
Median
Standard Deviation
Variance
z Distribution
t Distribution
F Distribution
Chi-Square Distribution
Summary
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Sampling Distributions
Chi-Square Distributions

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The chi-square distribution (χ2) is used for tests of frequencies and proportions. It is one of the few tests that can be used on nominal data.

Presented below is the chi-square distribution for df = 3.

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