You want to find out whether Americans between 21 and 40 years of age tend to vote Democratic and whether Americans between 41 and 70 tend to vote Republican. You will most likely use a ________ sample to collect your data.
A) simple random
B) skip interval
C) stratified
D) snowball
E) convenience

Question

Quizplus · Accepted Answer

Stratified sampling would be the best choice in this scenario because it allows for the population to be divided into subgroups based on age, which is the variable of interest, and then a random sample can be taken from each subgroup. This ensures that there is representation from both age groups in the sample, which is necessary to test the hypothesis. Simple random sampling may not ensure representation from both groups, skip interval sampling is not appropriate for this type of research question, snowball sampling would not provide a representative sample, and convenience sampling would introduce selection bias.

You Want to Find Out Whether Americans Between 21 and 40