Statistics & Probability
Geometric Distribution
P(first success on trial k).
Formula
Formula
P = (1−p)k−1 · p
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| p | success probability | real number (ℝ) | — | input |
| k | trial number | integer (ℤ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenprob p = 0.2, k = 3
Result0.128
Example 2
Givenprob p = 0.5, k = 1
Result0.5