Chi-squared Flashcards

1
Q

What is the criteria for chi-square?

A

1.Difference
2.Indepent measures
3. Nominal data

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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

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3
Q

What is the equation for degrees of freedom?

A

(Number of rows-1) x (Number of columns -1)

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4
Q

What is the equation for expected frequency?

A

Row total x column total / Overall total

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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.

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