NTCHISKEW

Returns skewness of a specified chi distribution.

Syntax

NTCHISKEW(
    N
)

Parameters

• N is a parameter of the distribution $N$ (Positive integer).

Remarks

The skewness of the distribution is given as:

$$\frac{\mu(3)-3\mu(2)\mu(1)+2\mu^3(1)}{\sigma^3}$$ $$\mu(r)=\frac{2^{\frac{r}{2}}\Gamma\left(\frac{N+r}{2}\right)}{\Gamma\left(\frac{N}{2}\right)}$$

, where $\sigma$ is standard deviation and $\Gamma(\cdot)$ is gamma function.

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

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.

	A	B
1	Data	Description
2	8	Value of parameter N
3	Formula	Description (Result)
4	=NTCHISKEW(A2)	Skewness of the distribution for the terms above

See also

• NTRANDCHI
• NTCHIDIST
• NTCHIKURT
• NTCHIMEAN
• NTCHIMOM
• NTCHISTDEV
• Chi distribution