7.3.3 Column Replacement

Column replacement operates on a column of the current relation, and supports three distinct types of variables: internals, PointEstimation, and LineFit.

The following getstats internal variables are supported:

$name

The name of the current column

From Statistics::PointEstimation (perldoc Statistics::PointEstimation):

$mean

$median

$stdev

$variance

$min

$max

$sum

$count

$mode

$delta

The half-width of the confidence interval. The confidence level for the CI is $globals{confidencelevel}.

From Statistics::LineFit (perldoc Statistics::LineFit):

$slope

Slope of the fitted line

$intercept

Intercept of the fitted line

$lr-rSquared

$lr-durbinWatson

$lr-meanSqError

$lr-sigma

Column replacement implies global replacement.