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Cumulative Distribution Functions

Cumulative Distribution Functions. The cumulative distribution function of a random variable X , written, F , indicates the probability that is at and to the left of each point x . CDFs are defined for both discrete and continuous random variables. Properties of a CDF.

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Cumulative Distribution Functions

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  1. Cumulative Distribution Functions • The cumulative distribution function of a random variable X, written, F, indicates the probability that is at and to the left of each point x. • CDFs are defined for both discrete and continuous random variables.

  2. Properties of a CDF

  3. CDFs for continuous RVs • If X is a continuous RV with density f, the cumulative distribution function of X is

  4. Special Properties of a CDF for a Continuous RV

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