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Unit 3: Inference for Categorical Data: Proportions

Carrying Out a Chi-Square Test for Homogeneity or Independence

Compute expected counts, the chi-square statistic, degrees of freedom and p-value for a two-way table, then interpret the p-value and state the conclusion in context.

Topic 3.15 · 9 min read

This lesson comes with the AP Statistics plan

In this lesson

  1. 01Expected counts: what the null hypothesis predicts
  2. 02The statistic, degrees of freedom, and p-value
  3. 03Interpreting the p-value and concluding
  4. 04Worked examples
  5. 05Where students lose points
  6. 06On the exam

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