Chi-squared Flashcards
1
Q
What is the criteria for chi-square?
A
1.Difference
2.Indepent measures
3. Nominal data
2
Q
How do you calculate chi-square?
A
1.Add the totals for each column and row
2.Calculate the expected frequency for each cell of the table.
3.Use the formula for chi-square.
4. Calculate degrees of freedom
5. Use critical value table using degrees of freedom
3
Q
What is the equation for degrees of freedom?
A
(Number of rows-1) x (Number of columns -1)
4
Q
What is the equation for expected frequency?
A
Row total x column total / Overall total
5
Q
What is an easy mistake when finding overall total for chi-square?
A
Adding up all the numbers- only add up row totals.