# NORM.S.INV

The NORM.S.INV function calculates the inverse of the standard normal cumulative distribution for a specified probability. It is commonly used in statistics and probability theory to find the value at which the standard normal distribution reaches a given probability.

## Syntax

=NORM.S.INV(`probability`

)

`probability` | The probability for which you want to find the value on the standard normal distribution. Must be between 0 and 1 inclusive. |

## About NORM.S.INV

In the realm of statistics and probability, NORM.S.INV in Excel shines as a trustworthy companion for analysts seeking to unearth the thresholds of the standard normal distribution. By providing a probability as input, this function effortlessly yields the corresponding value on the standard normal curve, enabling precise determinations in various analytical scenarios involving normal variables and probabilities. NORM.S.INV facilitates swift and accurate calculations, unveiling critical insights regarding probabilities and their corresponding standard normal values with ease and reliability.

## Examples

Suppose you want to determine the z-score on the standard normal distribution corresponding to a cumulative probability of 0.25. You can use the NORM.S.INV function like this: =NORM.S.INV(0.25). This will give you the z-score for the specified probability.

If you are conducting a statistical analysis and need to find the threshold value on the standard normal distribution for a probability of 0.95, you can employ the NORM.S.INV function with the syntax: =NORM.S.INV(0.95).

For a research project involving probability calculations, you can utilize NORM.S.INV to determine the z-score associated with a probability of 0.1. Simply input =NORM.S.INV(0.1) to attain the relevant z-score for the provided probability.

## Notes

Ensure that the probability provided as an argument falls within the range of 0 to 1, inclusively. The NORM.S.INV function operates based on the standard normal distribution and provides the inverse of the cumulative distribution for the specified probability, delivering essential insights for statistical analyses and probability assessments.

## Questions

**What is the range for the probability argument in the NORM.S.INV function?**

The probability argument in the NORM.S.INV function must be between 0 and 1, inclusively. Make sure to provide a valid probability value within this range to obtain accurate results.

**How does the NORM.S.INV function assist in statistical analysis?**

The NORM.S.INV function aids in statistical analysis by providing the inverse of the standard normal cumulative distribution, which helps analysts determine the corresponding value on the standard normal curve for a given probability. This functionality is crucial for various statistical calculations and probability assessments.

## Related functions

NORM.INV

NORM.DIST

NORM.S.DIST

NORM.DIST.RT

NORM.INV.RT

NORM.S.DIST.RT