TTest1_sterr - script and chart function

TTest1_sterr() returns the aggregated student's t-test standard error of the mean difference for a series of values.

This function applies to one-sample student's t-tests.

If the function is used in the load script, the values are iterated over a number of records as defined by a group by clause.

If the function is used in a chart expression, the values are iterated over the chart dimensions.

Syntax:  

TTest1_sterr (value) 

Return data type: numeric

Arguments:  

Argument Description
value The samples to be evaluated. If a field name for the sample values is not provided in the load script, the field will automatically be named Value.

Limitations:  

Text values, NULL values and missing values in the expression value will result in the function returning NULL.

Example:  

TTest1_sterr( Value )