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What is a random variable?

Back

A random variable is a numerical outcome of a random phenomenon, which can take on different values based on the outcome of a random event.

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What are the two types of random variables?

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Discrete random variables and continuous random variables.

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Define a discrete random variable.

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A discrete random variable is one that can take on a countable number of distinct values.

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Define a continuous random variable.

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A continuous random variable is one that can take on an infinite number of possible values within a given range.

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What is a probability distribution?

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A probability distribution describes how the probabilities are distributed over the values of the random variable.

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Front

What is the sum of probabilities in a probability distribution?

Back

The sum of all probabilities in a probability distribution is always equal to one.

Tags

CCSS.7.SP.C.7A

Front

What is a binomial experiment?

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A binomial experiment is a statistical experiment that has two possible outcomes (success or failure) for each trial.

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How many outcomes are there in a binomial experiment?

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There are 2 outcomes in a binomial experiment.

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What is an example of a discrete random variable?

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The number of students enrolled in a school.

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What is an example of a continuous random variable?

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The amount of paint used in repainting a building.