This question is incomplete. Here's the complete question.
You have a hypothesis that of people ages 4 to 35, teenagers will like a new drink called SugarHi better than any other age group. You want to survey 40 people for their opinions about the drink, but you are unsure how many people to survey from each age group. Which of the answer choices below represents the most fair way to collect the data?
- 4 - 11 yr old:
- 12 - 19 yr old:
- 20 - 27 yr old:
- 28 - 35 yr old:
a. 5, 30, 2, 3
b. 10, 10, 10, 10
c. 10, 15, 5, 10
d. 10, 5, 15, 10
Answer: b. 10, 10, 10, 10
Explanation:
To make sure that the comparison between age groups is fair, each group should have the same amount of participants, meaning each group should have 10 surveys for each age group.
This would be an example of stratified sampling which selects participants from distinct sub-groups, like age-groups.
