This function applies to two independent samples student's t-tests where the input data series is given in weighted two-column format.
If the function is used in the data 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.
TTestw_dif (weight, grp, value)
Return data type: numeric
||Each value in value can be counted one or more times according to a corresponding weight value in weight.|
||The field containing the names of each of the two sample groups. If a field name for the group is not provided in the load script, the field will automatically be given the name Type.|
||The sample values to be evaluated. The sample values must be logically grouped as specified by exactly two values in
TTestw_dif( Weight, Group, Value )
TTestw_dif( Weight, Group, Value, false )