Chi Square Test Flashcards
When do we use Chi square tests?
Explore relationships between 2 categorical variables
How do we make a contingency table (list row and column values)
Row: dependent
Column: independent
How do you find expected counts?
Row total x column total / grand total
How do you find degrees of freedom?
(# rows - 1) (# columns - 1)
What are the conditions for a chi square test?
No expected cell counts less than 1, 20% of the cell counts have expected cell counts less than 5
Hypotheses
H0: there is no association between ____ and ____
Ha: There is an association between _____ and ____
What values do we list for chi square?
Test statistic (chi square =__), p-value
Conclusion
There is/isn’t sufficient evidence to support that there is an association between ____ and ____