Chi square tests

Question 1

What variables does it look at?

Answer 1

categorical

Question 2

what is the purpose?

Answer 2

see if there’s association between the variables

Question 3

expected cell frequency

Answer 3

= row total x column total / grand total

Question 4

what happens if > 20% of cell frequencies are less than 5?

Answer 4

collapse data

use yates/continuity corrected chi square test

Question 5

what is the chi square formula?

Answer 5

(O-E)^2/E

Question 6

what is the degrees of freedom?

Answer 6

(# rows - 1)(# columns - 1)