Computes the skewness and kurtosis of a sequence. Skewness is a measurement of symmetry. Kurtosis is the peak measurement of a distribution.
The input sequence.
If x is empty, this node sets skewness and kurtosis to NaN.
Weighting mode that this node uses to compute the input sequence.
Name | Description |
---|---|
Sample | The input sequence is a random sample taken from a population. |
Population | The input sequence is a complete population. |
Default: Sample
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Default: No error
Symmetrical measurement of the input sequence.
Understanding the Value of skewness
A negative value of skewness indicates that the left side of the probability density function is longer than the right side. The following image shows negative skewness.
A positive value of skewness indicates that the right side of the probability density function is longer than the right side. The following image shows positive skewness.
Peak measurement of the input sequence.
Understanding the Value of kurtosis
When determining kurtosis, normal distribution has a kurtosis value of 3. A kurtosis value of less than 3 indicates a flatter distribution than normal. A kurtosis value of greater than 3 indicates a sharper distribution than normal. The following figure shows three distributions with kurtosis values of 6, 3, 1.8.
Error information.
The node produces this output according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Where This Node Can Run:
Desktop OS: Windows
FPGA: This product does not support FPGA devices
Web Server: Not supported in VIs that run in a web application