`dataFrame.columns.stat — sumSquaresBetween()`

Description

The sumSquaresBetween() method of the stat object computes the between-group sum of squares (SSB) for the selected columns.

Signature

dataFrame.columns(...columnNames).stat.sumSquaresBetween()

Scope: columns
Family: stat
Returns: number

Argument

...columnNames ( string[] ): The name of the columns from which to compute the between-group sum of squares.

Returns

ssb (number): The computed between-group sum of squares.

Notes

The method requires at least two selected columns.
The statistic measures the variability explained by differences between group means.
Larger values indicate greater separation between group means.
The statistic is commonly used in analysis of variance (ANOVA).
The between-group sum of squares contributes to the computation of F-statistics, eta squared, and omega squared.
The value depends on both the magnitude of mean differences and the number of observations.

Example

// calculate the SSB from the values of 2 columns of the dataFrame
var ssb = dataFrame.columns('group_1', 'group_2').stat.sumSquaresBetween();

// log the SSB
notebook.log(ssb);