# NormDist - script and chart function

NormDist() returns the cumulative normal distribution for the specified mean and standard deviation. If mean = 0 and standard\_dev = 1, the function returns the standard normal distribution.

Syntax:

NormDist(value, mean, standard\_dev)

Return data type: number

Arguments:

NORMDIST arguments

| Argument | Description |
| --- | --- |
| value | The value at which you want to evaluate the distribution. |
| mean | A value stating the arithmetic mean for the distribution. |
| standard\_dev | A positive value stating the standard deviation of the distribution. |

This function is related to the NormInv function in the following way:   
`If prob = NormDist(value, m, 
 sd), then NormInv(prob, m, sd) = value`

Limitations:

All arguments must be numeric, else NULL will be returned.

Examples and results:

Examples and results

| Example | Result |
| --- | --- |
| NormDist(<br>0.5, 0, 1) | Returns 0.6915 |

## Learn more

* [NormInv - script and chart function](https://help.qlik.com/en-US/qlikview/September2026/Subsystems/Client/Content/QV_QlikView/Scripting/StatisticalDistributionFunctions/NormInv.htm)