random variable
/ˌrændəm ˈveəriəbəl/
a variable whose value is determined by chance
random variable in a sentence
“The number of heads in 10 coin flips is a random variable.”
Origin of random variable
From random (Old French randon rush, disorder) + variable
Related Words
expected value
the long-run average value of a random variable
variance
a measure of how spread out a distribution is
standard deviation
the square root of variance; a measure of dispersion
distribution
a function showing all possible values and their probabilities
independent
events where one does not affect the probability of another
conditional probability
the probability of an event given that another has occurred