chapter fifteen-text Flashcards
1
Q
chi-square test (X²)
A
tests for goodness of fit & independence - categorical variables
2
Q
X² goodness of fit
A
measures how well the observed data from a sample aligns with the expected distribution based on a theoretical model
3
Q
two types of null hypotheses for X² goodness of fit tests
A
- no preference
- no difference from a comparison population
4
Q
no preference
A
category proportions are EQUAL
H₀: X² = 0
5
Q
no difference from a comparison population
A
category frequencies EQUALS a prior set of expected frequencies
H₀: X² = 0
6
Q
A
