Summarising Data Using a Contingency Table

Question 1

Contingency table (two-way table) is a

Answer 1

tabular format that displays frequency distributions between two or more categorical variables simultaneously and is used for finding patterns between variables.

Question 2

Joint frequencies are

Answer 2

entry in the cells of a contingency table that represent a joining of one variable from a row to another variable from a column to count observations.

Question 3

Marginal frequencies are

Answer 3

the sums determined by adding joint frequencies across rows or across columns in a contingency table

Question 4

Confusion matrix is a

Answer 4

contingency table that is used for error analysis in classification problems.

Question 5

Chi-square test of independence is

Answer 5

a statistical test for detecting a potential association between categorical values.