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NTBETAMEAN

Returns standard deviation of a specified beta distribution.

Syntax​

NTBETAMEAN(
    Alpha,
    Beta
)

Parameters​

  • Alpha is a parameter of the distribution α(>0)\alpha(>0).
  • Beta is a parameter of the distribution β(>0)\beta(>0).

Remarks​

The mean of the distribution is given as:

αα+β\frac{\alpha}{\alpha+\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
28Value of parameter Alpha
32Value of parameter Beta
4FormulaDescription (Result)
5=NTBETAMEAN(A2,A3)Standard deviation of the distribution for the terms above

See also​