For Questions use the following narrative
Narrative: Apartment complex
Suppose you want to survey the opinions of the residents of an apartment complex.The complex contains 100 buildings, each with 8 units per building, for a total of 800 units.You decide to sample 160 of the units.
-{Apartment complex narrative} Suppose 50 of the buildings (400 total units) are for singles, and 50 buildings (400 units) are for non-singles.You randomly select 80 single units and then you randomly select 80 non-single units.What sampling method did you use?
A)A systematic sample.
B)A stratified sample.
C)A cluster sample.
D)A simple random sample

Question

Quizplus · Accepted Answer

The sampling method used is a stratified sample because the population (apartment complex) was divided into two strata: single units and non-single units. From each stratum, a simple random sample of 80 units was selected. This ensures that each stratum is represented proportionally in the sample and increases the precision of the estimates for each stratum.

For Questions Use the Following Narrative