Properties of Stratified Random Sampling
A market researcher uses a stratified random sample, with age as the stratification variable, to study consumer preferences. Which of the following must be true about this sampling procedure?
A
Participants must be randomly assigned to age groups
B
Simple random sampling occurs within each age group
C
The oldest age group must be sampled first
D
Each age group must have the same number of participants
Question Leaderboard
Not enough data yet to show leaderboard.