Test for assocation - Chi squared Flashcards
1
Q
When would you use a chi square test?
A
- test for a difference / association
- nominal data
- independent group design
2
Q
What does chi square test begin with?
A
contingency table
3
Q
What are you comparing?
A
observed value to critical value
4
Q
When would data be significant?
A
observed value > critical value
5
Q
how to calculate degrees of freedom
A
(no. rows - 1) x (no.columns - 1)
6
Q
how do you establish the critical value?
A
by working out the degrees of freedom
