Chi Square Tests

Question 1

What is a chi-square test?

Answer 1

A statistical test used to determine if there is a significant association between two categorical variables

Question 2

What does the chi-square test compare?

Answer 2

Frequency distributions of two or more nominally scaled variables in a cross-tabulation table.

Question 3

How many sides does a chi square test have?

Answer 3

one side (always)

Question 4

What is the equation of degrees of freedom?

Answer 4

df= (# of rows-1)(# of columns - 1)

Question 5

What are the steps for a 2x2 chi-square computation?

Answer 5

1. Fill in the frequencies based on the data
2. Compute the average proportions
3. Compute the expected frequencies
4. Compute the chi-square
   5.Compare the calculated chi square value with critical chi-square value or compute the p-value

Question 6

The p-value would need to be below what to reject the null?

Answer 6

0.5