**Common questions about the GAMMAINV formula include:**

- What does the GAMMAINV formula do?

- What are the parameters for the GAMMAINV formula?

- How do I apply the GAMMAINV formula?

The GAMMAINV formula

**computes the inverse of the cumulative distribution function for Gamma**. It can be used to calculate the value of “x” when given the probability and the parameters of a Gamma distribution.

The GAMMAINV formula can be correctly typed as: “=GAMMAINV(probability, shape, scale)”.

**Common typos**of the GAMMAINV formula include: “GAMMAINV”, “GAMMAINV()”, “=GAMMAINV”, or “=GAMMAINV()”.

**The GAMMAINV formula can be used inappropriately**when the parameters are specified incorrectly, when non-numeric values are entered, or when it is used to calculate the probability of a range instead of a specific value.

**Common pitfalls**when using the GAMMAINV formula include: forgetting to add quotation marks to parameters that are strings; misremembering the order of the parameters; and assuming that the inputted parameters are valid.

**Common mistakes**when using the GAMMAINV Formula include: entering parameters that are not valid numbers; mistyping the formula; entering parameters that don’t match the gamma distribution you are trying to evaluate; and confusing gamma and normal distributions.

**Common misconceptions**people might have with the GAMMAINV Formula include: that GAMMAINV can calculate the probability when given parameters, when in fact it only calculates the value “x” given a probability; that GAMMAINV can be used for distributions other than gamma; and that GAMMAINV is a probability function when it is actually an inverse cumulative distribution function.