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  • Chapters
    • 1. Discrete Probability Distributions
    • 2. Continuous Random Variables & Continuous Probability Distributions
    • 3. Using Tables to Find Areas and Percentiles
    • 4. Sampling Distributions
    • 5. Confidence Intervals
    • 6. Hypothesis Testing
    • 7. Inference for Two Means
    • 8. Inference for Proportions
    • 9. Chi-square Tests
    • 10. Variances
    • 11. ANOVA
    • 12. Regression
    • 13. Jimmy and Mr. Snoothouse
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9. Chi-square Tests

9.1 Chi-square Tests for One-way tables

November 19, 2020September 1, 2000 by JB

I introduce the chi-square test for one-way tables (sometimes called a goodness-offit test), and work through an example. The data used here is from a classic 1905 genetics experiment by William Bateson and Reginald Punnet.

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9.2 Chi-square tests: Goodness of fit for the binomial distribution

November 19, 2020September 2, 2000 by JB

I work through an example of testing the null hypothesis that the data comes from a binomial distribution. I do this for two tests, one in which the probability of success is specified in the null hypothesis, and one where it is estimated from the data.

Categories 9. Chi-square Tests 4 Comments

9.3 Chi-square Tests for Two-way Tables (Chi-square Tests of Independence)

November 19, 2020September 3, 2000 by JB

I introduce the chi-square test of independence and work through an example.

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9.4 Chi-square tests for count data: Finding the p-value

November 19, 2020September 4, 2000 by JB

I work through an example of finding the p-value for a chi-square test, using both the table and R.

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Chapters

  • 1. Discrete Probability Distributions
  • 2. Continuous Random Variables & Continuous Probability Distributions
  • 3. Using Tables to Find Areas and Percentiles
  • 4. Sampling Distributions
  • 5. Confidence Intervals
  • 6. Hypothesis Testing
  • 7. Inference for Two Means
  • 8. Inference for Proportions
  • 9. Chi-square Tests
  • 10. Variances
  • 11. ANOVA
  • 12. Regression
  • 13. Jimmy and Mr. Snoothouse

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