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#### shaalaa.com | Introduction to Random Variables

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Probability Distribution

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- Probability distribution of a random variable-definition of a random variable
- Discrete and continuous random variable
- Probability mass function (p.m.f.)
- Probability distribution of a discrete random variable
- Cumulative probability distribution of a discrete random variable
- Expected value
- Variance and standard deviation of a discrete random variable
- Probability density function (p.d.f.)
- Distribution function of a continuous random variable.