[ noun ] (mathematics) a variable quantity that is random
Used in print(Frederick Mosteller et al., Probability with...)
Here the number of trials is a random_variable , not a fixed number .
Each performance of an n-trial binomial experiment results in some whole_number from 0 through n as the value of the random_variable X , where * * f .
We want to study the probability function of this random_variable .
A binomial experiment can produce random_variables other_than the number of successes .
Thus we do not score the number of bull's-eyes , and the random_variable is not the number of successes .