Gamma Distribution CDF Calculator
α is the shape parameter (k).
β is the scale parameter (λ).
In other parameterizations, 1/β is the rate parameter.
See the Statistical Distributions Overview page for more statistical distribution calculators.
Example 1
| Value | Keystrokes | Display | Description |
|---|---|---|---|
| .8 | x | 0.8 | Stores the x value. |
| 1 | α | 1.0 | Stores the α value. |
| 2 | β | 2.0 | Stores the β value. |
| cdf | 0.3297 | Calculates the cdf |
Example 2 - Solving for the inverse
| Value | Keystrokes | Display | Description |
|---|---|---|---|
| .05 | cdf | 0.050 | Stores the cdf target value. |
| x | 0.1026 | Solves for the x value |
This Function Calculator can also solve for α and β values.
Reference:
Gamma distribution - Wikipedia