Cross-tabulation

Question 1

R x C table

Answer 1

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

x-axis (rows): explanatory variable

y-axis (columns): response variable

Question 2

Joint distribution

Answer 2

Dividing each cell by the total sample size

Question 3

Marginal distribution

Answer 3

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

Question 4

Conditional distribution

Answer 4

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

Question 5

H0 is ___

Answer 5

H0: there is no association between the row and column

Question 6

Ha is ___

Answer 6

Ha: there is an association between the row and column

Question 7

How do you test the null hypothesis?

Answer 7

You compare the observed cell counts with the expected cell counts

Question 8

What does the Chi-square test do?

Answer 8

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