CHI SQUARES PSY 511

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6 Terms

1
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Non Parametric

Are not based on means and standard deviations. They are NOT based on variability.

2
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Parametric Tests

Are based on means and standard deviations (variability)

However, sometimes we do not work with mean and standard deviation data in our studies

3
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What type of tests are these?

a. T-test = Parametric

b. ANOVA= Parametric

c. Correlation and regression = Parametric

d. Chi-square = Nonparametric

4
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Chi Square Test of Independence (χ²)

A non parametric test, used when you have frequency counts (how many people fall into each category)

It tells you whether the pattern you observed matches the pattern you expected

5
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Chi Square Goodness of Fit test (χ²)

A non parametric test, It checks how well the observed counts match the expected counts.

—> RATIO 7: 3: 2

O= observed number of people

E= Expected number of people

6
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Assumptions of Chi Square

The data could be nominal (we are using frequency)

Random sampling with replacement

The frequency within a cell should not be too small (less than 5 in a cell)