GAMMAINV
The GAMMAINV function calculates the inverse of the gamma cumulative distribution function for a specified probability and input parameters. It is used in statistics and probability analysis to find the input value corresponding to a given probability in a gamma distribution.
Syntax 🔗
=GAMMAINV(Probability, Alpha, Beta)
Probability | The probability for which you want to find the input value. |
Alpha | The alpha parameter of the gamma distribution. |
Beta | The beta parameter of the gamma distribution. |
About GAMMAINV 🔗
Use the GAMMAINV function in Excel to find the input value associated with a specific probability in a gamma distribution. This function helps you determine the value corresponding to a given probability in the gamma cumulative distribution function, which is useful for statistical analysis and probability studies. To use GAMMAINV, enter the desired probability along with the alpha and beta parameters that define the gamma distribution. By providing these inputs, Excel calculates the inverse gamma distribution function, allowing you to identify the input value linked to the specified probability.
Examples 🔗
Suppose you have a gamma distribution with Alpha = 2 and Beta = 1.5. You want to find the input value associated with a probability of 0.75. Use the GAMMAINV function as follows: =GAMMAINV(0.75, 2, 1.5). This will return the input value corresponding to a probability of 0.75 in the specified gamma distribution.
Notes 🔗
Use the GAMMAINV function when you need to calculate the inverse of the gamma cumulative distribution. Make sure your probability value is between 0 and 1, and that your alpha and beta parameters are positive numbers. This ensures your parameters accurately reflect the characteristics of your gamma distribution for precise results.
Questions 🔗
The GAMMAINV function calculates the inverse of the gamma cumulative distribution function by finding the input value corresponding to a specified probability in a gamma distribution characterized by the alpha and beta parameters.
Can GAMMAINV handle probabilities outside the range of 0 to 1?No, the GAMMAINV function is designed to work with probabilities within the range of 0 to 1. Ensure that the probability value provided falls within this range for accurate results.
What happens if the alpha or beta parameters are negative in the GAMMAINV function?The alpha and beta parameters in the GAMMAINV function must be positive numeric values as they define the shape and scale of the gamma distribution. Providing negative values for these parameters will result in an error.