Question
Identify the sampling design:The CCCC registrar wants to investigate the attitudes of their graduates. The registrar randomly selects 100 names from each of the four past graduating classes. Simple Random Sample Stratified Random Sample Systematic Random Sample Cluster Sample
Answer
4.5
(284 Votes)
Sienna
Master · Tutor for 5 years
Answer
Stratified Random Sample
Explanation
## Step 1: Understand the problemIn this problem, the registrar of CCCC is investigating the attitudes of their graduates. They are doing this by randomly selecting 100 names from each of the past four graduating classes. ## Step 2: Identify the sampling designThere are four types of sampling design mentioned in the question: Simple Random Sample, Stratified Random Sample, Systematic Random Sample, and Cluster Sample. - Simple Random Sample: Every member of the population has an equal chance of being selected.- Stratified Random Sample: The population is divided into groups (strata) based on some characteristics, and then a random sample is taken from each group.- Systematic Random Sample: Every nth member of the population is selected.- Cluster Sample: The population is divided into clusters (groups), and then some clusters are selected randomly, and all members of these clusters are included in the sample.In this case, the registrar is dividing the population (graduates) into groups (classes), and then randomly selecting a sample from each group. This is characteristic of a stratified random sample.