Inputs
Result
Result
Enter values and calculate.
P(X = k)
—
P(X ≤ k)
—
= 1−(1−p)^k
P(X > k)
—
= (1−p)^k
Mean μ
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= 1/p
Variance σ²
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= (1−p)/p²
Std Dev σ
—
Compute P(X=k) = (1−p)^(k−1)·p — the probability that the first success occurs on trial k. Includes CDF, mean 1/p, and variance.
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