Skip to main content

NTWEIBULLINV

Returns the inverse of the cumulative distribution function for a specified Weibull distribution.

Syntax​

NTWEIBULLINV(
    prob,
    Alpha,
    Beta
)

Parameters​

  • prob is a probability corresponding to the normal distribution.
  • Alpha is a parameter of the distribution α(>0)\alpha(>0).
  • Beta is a parameter of the distribution β(>0)\beta(>0).

Remarks​

The return value x for probability P is

x=α(−log⁡P)1/βx=\alpha\left(-\log P\right)^{1/\beta}

Example​

  • The example may be easier to understand if you copy it to a blank worksheet
How to copy an example

  1. Create a blank workbook or worksheet.

  2. Select the example in the Help topic.

    Note  Do not select the row or column headers.

    Selecting an example from Help

    Selecting an example from Help

  3. Press CTRL+C.

  4. In the worksheet, select cell A1, and press CTRL+V.

  5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Tools menu, point to Formula Auditing, and then click Formula Auditing Mode.

AB
1DataDescription
20.5Probability associated with the Weibull distribution
31.7Value of parameter Alpha
40.9Value of parameter Beta
5FormulaDescription (Result)
6=NTWEIBULLINV(A2,A3,A4)Inverse of the cumulative distribution function for the terms above

See also​