When we sort subjects only into those who improved their performance over time, worsened their performance over time, and stayed the same, we have
A) a one-way classification.
B) a two-way classification.
C) a contingency table.
D) a set of ordered data.

Question

Quizplus · Accepted Answer

This is a one-way classification because we are only sorting the subjects based on one criterion: whether they improved, worsened, or stayed the same over time. This is different from a two-way classification, which would involve sorting subjects based on two criteria (e.g. gender and performance). A contingency table involves displaying the frequency of two categorical variables in a table format, and sorted data refers to data that has been arranged in order from lowest to highest or vice versa.

When We Sort Subjects Only into Those Who Improved Their