Research 2: Quiz 3

Question 1

What 3 assumptions are needed for a valid chi-square test?

Answer 1

• the groups are independent
• the value of the cells in the expected count should be greater than or equal to 5 in at least 80% of the cells
• no cell should have an expected count of less than 1

Question 2

What test do you use when both variables are continuous?

Answer 2

Pearson Correlation

Question 3

What test do you want to run when both variables are ordinal?

Answer 3

Spearman’s Rank Correlation

Question 4

What test do you use when one variable is categorical and one variable is continuous?

Answer 4

Point biserial correlation coefficient

Question 5

What test do you run when both variables are categorical?

Answer 5

Phi coefficient