Question

Which of the following is not a characteristic of both surveys and

observational studies?
OA. The researcher does not control or change the population.
B. Data are collected about a population.
OC. The researcher selects a sample of the population to study.
OD. The researcher exercises direct control over at least one variable.

Answer 1

Answer: B. Data are collected about a population.

Explanation: Because you have to collect the population level to be able to complete both surveys.