In order to estimate the average (mean) weight of all professional football players, an investigator determines the weight of the "Dallas Cowboy" players. All professional football players constitute a _________.
A) population
B) parameter
C) sample
D) statistic

Question

Quizplus · Accepted Answer

The investigator is trying to estimate the average weight of all professional football players, which is the population of interest. The weight of the Dallas Cowboy players is being used as a representation of this population. Therefore, the correct answer is population (A). Parameter (B) refers to a numerical characteristic of a population, such as its mean or standard deviation. Sample (C) refers to a subset of a population that is actually observed in a study. Statistic (D) refers to a numerical characteristic of a sample, such as its mean or standard deviation.

In Order to Estimate the Average (Mean) Weight of All