Probability is an important concept for researchers primarily because ______.

A) it helps researchers prove their hypotheses
B) researchers collect data from samples rather than populations
C) researchers test hypotheses about samples by collecting data from populations
D) most research involves flipping coins and pulling aces out of a deck of cards

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Samples

Subsets of a population selected for measurement, observation, or questioning to make statistical inferences about the whole population.

Populations

In statistics, the entire pool from which a statistical sample is drawn and to which conclusions or inferences are made based on the sample.