Test for assocation - Chi squared Flashcards

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1
Q

When would you use a chi square test?

A
  1. test for a difference / association
  2. nominal data
  3. independent group design
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2
Q

What does chi square test begin with?

A

contingency table

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3
Q

What are you comparing?

A

observed value to critical value

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4
Q

When would data be significant?

A

observed value > critical value

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5
Q

how to calculate degrees of freedom

A

(no. rows - 1) x (no.columns - 1)

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6
Q

how do you establish the critical value?

A

by working out the degrees of freedom

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