When given a cup of coffee before a race, a sample of runners were found to run the race faster than without coffee. If we then conclude that on average runners run faster after drinking coffee, this would be an example of
A) an illogical inference.
B) an inferential inference.
C) a statistical inference.
D) a descriptive inference.

Question

Quizplus · Accepted Answer

This is a statistical inference because it is based on a sample of runners and we are making an inference about the population of all runners. It is not illogical, inferential, or descriptive without additional information.

When Given a Cup of Coffee Before a Race, a Sample