How to Use the GAMMAINV Function in Excel
Today, we will delve into an effective statistical tool in Microsoft Excel and Google Sheets known as the GAMMAINV function. The GAMMAINV function calculates the inverse of the gamma cumulative distribution, which is highly valuable in diverse areas such as quality control, reliability analysis, and risk management.
Syntax
The syntax for the GAMMAINV function is consistent across both Excel and Google Sheets:
=GAMMAINV(probability, alpha, beta)probability: The probability value for which the inverse of the gamma cumulative distribution is desired.alpha: The shape parameter of the distribution.beta: The rate parameter of the distribution.
Example 1
Consider determining the inverse of the gamma distribution for a probability of 0.2, with an alpha value of 2 and a beta value of 3.
| Formula | Result |
|---|---|
=GAMMAINV(0.2, 2, 3) |
0.975529 |
The result indicates that the inverse of the gamma distribution for a probability of 0.2, alpha of 2, and beta of 3 is approximately 0.975529.
Example 2
An example application of the GAMMAINV function in reliability analysis involves finding the inverse of the gamma cumulative distribution for a probability of 0.05, with alpha = 4 and beta = 2.
| Formula | Result |
|---|---|
=GAMMAINV(0.05, 4, 2) |
0.206685 |
In this instance, the result shows that the inverse of the gamma cumulative distribution for a probability of 0.05, with alpha = 4 and beta = 2, is approximately 0.206685.
The GAMMAINV function offers a straightforward means to analyze and compute the inverse of the gamma cumulative distribution in both Excel and Google Sheets, proving to be an indispensable resource for statistical and probabilistic calculations.
More information: https://support.microsoft.com/en-us/office/gammainv-function-06393558-37ab-47d0-aa63-432f99e7916d