Last Updated :2025/11/29

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A function which at each point t of the sample space has as its value the probability that a given random variable is less than (or equal) t. In symbols, F_X(t)=Pr(X

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cumulative distribution function

To find the probability that X is less than t, we evaluate the cumulative distribution function at t.

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To find the probability that X is less than t, we evaluate the cumulative distribution function at t.

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