Question

use the venn diagram to identify the population and the sample
incomes of adults in arizona
venn diagram: blue oval labeled \incomes of adults in arizona who are high school graduates\, yellow rectangle labeled \incomes of adults in arizona who are not high school graduates\

choose the correct description of the population
a. the incomes of adults in arizona
b. the number of adults in arizona
c. the number of adults in arizona who are high school graduates
d. the incomes of adults in arizona who are high school graduates

choose the correct description of the sample
a. the incomes of adults in arizona
b. the incomes of adults in arizona who are high school graduates
c. the number of adults in arizona who are high school graduates
d. the number of adults in arizona

Explanation:

Part 1: Population Description

The population in a statistical context refers to the entire group we want to study. Here, the Venn diagram's outer region (and the overall context) is about incomes of adults in Arizona. Option A is about incomes of all adults in Arizona, which is the population. Option B is about the number of adults (not incomes), C is a subset (high school grads' count), D is a subset (incomes of high school grads). So A is correct.

A sample is a subset of the population. The blue oval in the Venn diagram is "incomes of adults in Arizona who are high school graduates", which is a subset of the population (all adults' incomes in Arizona). Option A is the population, B is the subset (incomes of high school grads), C is a count (not incomes), D is a count of all adults. So B is correct.

Answer:

A. The incomes of adults in Arizona

Part 2: Sample Description