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Statistics · PROB

Binomial Distribution — P(X=k) and Mean/Variance

A bar graph shows numbers as bars. Taller bar = bigger number.

StatisticsCommon Core VAR-5.EPROBVerified correct ✓

Worked examples

In a binomial experiment with n = 5 independent trials, the probability of success on each trial is p = 1/2. Find P(X = 4).
Answer: 0.1562

In a binomial experiment with n = 10 independent trials, the probability of success on each trial is p = 3/10. Find P(X = 2).
Answer: 0.2335

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Binomial Distribution — Probability and Expected Value Discrete Random Variables — Mean and Standard Deviation

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