E: Chi-Squared Contingency Table Tests

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From the OCR B MEI specification (LINK):

PLAYLIST

The Chi-Squared Statistic

01 Introduction

02 The Chi-Squared Statistic

Hypothesis Testing

03 Null & Alternative Hypotheses

04 Critical Values

05 Degrees of Freedom

06 The Hypothesis Test

07 Example 1

08 Example 2

09 Interpreting Contributions

10 Small Expected Frequencies