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Statistics and Probability

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Identifying a Random Variable

STATS-LEF4HF

Which of the following is a random variable?

A

Recording the outcome of two six-sided die.

B

Collecting a sample of 40 individuals and recording each individuals annual income.

C

Collecting a sample of 40 individuals and computing the variance of the annual incomes of the individuals.

D

Selecting a random individual and finding out their blood type.