random variable(redirected from Statistical variable)
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a variable that may assume a set of values, each with fixed probabilities or probability densities (its distribution), in such a way that the total probability assigned to the distribution is unity; the random variable may be discrete, continuous, or mixed discrete-continuous.
unplanned, without direction or purpose.
where each member of the population has an equal opportunity of mating with every member of the opposite sex.
a list of numbers obtained by a standard randomization procedure; used commonly to select individual animals from a pack.
see random sample.
a procedure for selecting units from a group in such a way that each unit has an equal chance of being selected in the sample.
selection in such a way as to produce a random sample.
a group or quantity that takes various values, each with varying probabilities.