The mean for a population of N values is equivalent to
A) the mean of any random sample taken from the population.
B) the median of the population of N values.
C) the expected value of a random variable defined as X = value for a randomly sampled individual from the population.
D) Np where p = proportion of values in the population that are unique.

Question

Quizplus · Accepted Answer

The mean of a population is equivalent to the expected value of a random variable defined as X = value for a randomly sampled individual from the population. This is because the expected value is calculated by summing all possible values weighted by their probabilities, which mirrors the calculation of a mean in a population.

The Mean for a Population of N Values Is Equivalent