Question

sampling methods (it is possible to get the same question twice.)
in a study, the sample is chosen by selecting a room of the house, and appraising all items in that room
what is the sampling method?
simple random
systematic
stratified
cluster
convenience

Explanation:

In cluster sampling, the population is divided into groups (clusters), and entire clusters are selected. Here, a room is a cluster, and all items in that room are appraised. It's not simple random (no random selection of individual items), not systematic (no fixed - interval selection), not stratified (no division into strata based on characteristics), and not convenience (not just based on ease of access in a general sense but on the concept of a cluster).

Answer:

D. Cluster