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→Expectation and Variance
The variance is <math>Var(X) = \mathbf{E}[(X - \mathbf{E}[X])^2] = p(1-p)^2 + q(0-p)^2 = pq </math>.
The variance is <math>Var(X) = \mathbf{E}[(X - \mathbf{E}[X])^2] = p(1-p)^2 + q(0-p)^2 = pq </math>.
The sum of ''n'' Bernoulli experiments with the same probability of success ''p'' follows a [[Binomial distribution]] ''B(n,p)''.
[[category:Probability and Statistics]]
[[category:Probability and Statistics]]