Question

fill in the blank.
the ______ of a discrete random variable represents the mean value of the outcomes.

the ______ of a discrete random variable represents the mean value of the outcomes.
standard deviation
midrange
probability
expected value

Explanation:

The term that defines the mean value of the outcomes for a discrete random variable is the expected value, calculated as the sum of each outcome multiplied by its probability. Other terms do not fit: standard deviation measures spread, midrange is a measure of central tendency for raw data, and probability is the likelihood of an outcome.

Answer:

expected value