Safaa Dabagh

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Post-Assessment: Chi-Square Tests

Measuring Your Learning Gains

Post-Assessment Purpose

This assessment measures how much you've learned!

Questions: 5 questions (similar to pre-assessment)
Purpose: Measure your growth and learning gains
Not graded: This is for learning analytics only
Comparison: We'll compare your pre and post scores to show your progress

1

Which type of chi-square test would you use to determine if observed data matches an expected theoretical distribution?

A) Chi-square test of independence B) Chi-square goodness of fit test C) Chi-square test of homogeneity D) All of the above can be used

2

For a contingency table with 4 rows and 3 columns, what are the degrees of freedom for a chi-square test?

A) 12 B) 7 C) 6 D) 11

3

A researcher randomly samples 200 college students and classifies each by major (STEM, Humanities, Business) and study habits (Regular, Irregular). They want to know if major and study habits are related. Which test should be used?

A) Chi-square goodness of fit test B) Chi-square test of independence C) Chi-square test of homogeneity D) Two-sample t-test

4

In a chi-square test, you calculate the expected frequency for a cell in a contingency table. The row total is 120, the column total is 80, and the grand total is 400. What is the expected frequency for this cell?

A) 200 B) 24 C) 50 D) 100

5

Which of the following is a necessary condition for conducting a valid chi-square test?

A) The sample size must be less than 30 B) All expected frequencies must be at least 5 C) The data must be normally distributed D) The variables must be quantitative

Your responses will be recorded for learning analytics

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