Cross-tabulation Flashcards

1
Q

R x C table

A

It describes a two-way table of counts with (r) rows and (c) columns

x-axis (rows): explanatory variable

y-axis (columns): response variable

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2
Q

Joint distribution

A

Dividing each cell by the total sample size

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3
Q

Marginal distribution

A

Dividing number of cases in each category by the total sample size

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4
Q

Conditional distribution

A

Dividing the number in the cell by the total in the column

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5
Q

H0 is ___

A

H0: there is no association between the row and column

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6
Q

Ha is ___

A

Ha: there is an association between the row and column

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7
Q

How do you test the null hypothesis?

A

You compare the observed cell counts with the expected cell counts

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8
Q

What does the Chi-square test do?

A

It compares the entire set of observed counts with the set of expected counts (you find the chi-squared statistic X^2)

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