A statistics student found a reference in the campus library that contained the median family incomes for all 50 states. She would report her data as being collected using
A) a designed experiment.
B) a random sample.
C) observational data.
D) a published source.

Question

Quizplus · Accepted Answer

The data was obtained from a published source, so the best choice is D. This is considered observational data because the researcher did not have control over how the data was collected.

A Statistics Student Found a Reference in the Campus Library