Question

identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster. to determine her power usage, debra divides up her day into three parts: morning, afternoon, and evening. she then measures her power usage at 3 randomly selected times during each part of the day. what type of sampling is used? stratified systematic random cluster convenience

Explanation:

Debra divides the day (population) into strata (morning, afternoon, evening) and then samples from each stratum. This is characteristic of stratified sampling.

Answer:

Stratified