Imagine that you have three strata,the size of each is shown below.
Stratum 1: 100 individuals
Stratum 2: 200 individuals
Stratum 3: 700 individuals
You wish to draw a final sample of 100 individuals.Proportionate stratified sampling would result in how many individuals selected from Strata 3?
A)10
B)20
C)33
D)70

Question

Quizplus · Accepted Answer

Proportionate stratified sampling involves selecting a proportionate number of individuals from each stratum based on its size relative to the total population. Therefore, we would select approximately 10% from Stratum 1 (10 individuals), 20% from Stratum 2 (20 individuals), and 70% from Stratum 3 (70 individuals). Thus, the answer is D, or 70 individuals selected from Stratum 3.

Imagine That You Have Three Strata,the Size of Each Is