Chi Square Tests Flashcards
What do Z scores t test and correlation rely on
- at least the dv being continuous
- the dv being normally distributed
What type of tests are Z scores, t tests and correlation
Parametric tests
What is the goodness of fit test
A test that determines whether a variable is likely to come from a specified distribution or not.
Does the observed distribution fit the expected distribution?
What is a chi square for independence test
Used to determine whether two categorical or nominal variables are likely to be related or not
Under the null hypothesis, do we assume that two variables are dependent (related)
No
What does it mean if the test is significant (independent chi)
Can be interpreted that variables are related
How do u calculate expected frequencies (goodness of fit)
Add all O frequencies then divide by how many there are
How do u calculate expected frequency with given percentages
U times them by the number of participants
In chi square tests, can a participant provide more than one observation
No
How do u calculate df in a goodness of fit test
Categories - 1
How do u calculate df in a independence chi test
Categories - 1 x Rows - 1
When is it appropriate to calculate the phi statistic (o with line through it)
When there is a 2x2 contingency table
