Chi-squared test

Question 1

What is the chi-squared test used for?

Answer 1

To figure out whether there is a relationship between two variables, or whether the differences observed data and expected data are just due to random chance.

Question 2

What is the chi-squared test for?

Answer 2

Comparing observed vs expected data.
Testing relationships between variables.

Question 3

What type of data is chi-squared commonly used for?

Answer 3

Categorical data

Question 4

What type of table would you usually set up your data in for chi-squared?

Answer 4

contingency

Question 5

How does chi-squared work?

Answer 5

1. set up data
2. calculate expected values.
3. compare observed vs expected.
4. get a chi-squared value.
5. interpret the result