estimateResidualVariance: Estimate the residual variance.
In Najah-lshanableh/R-data-mining2: Machine Learning in R

Description Usage Arguments

Estimate the residual variance of a regression model on a given task. If a regression learner is provided instead of a model, the model is trained (see train) first.

1	estimateResidualVariance(x, task, data, target)

`x`	[`Learner` or `WrappedModel`] Learner or wrapped model.
`task`	[`RegrTask`] Regression task. If missing, `data` and `target` must be supplied.
`data`	[`data.frame`] A data frame containing the features and target variable. If missing, `task` must be supplied.
`target`	[`character(1)`] Name of the target variable. If missing, `task` must be supplied.