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lattice (version 0.17-25)

oneway: Fit One-way Model

Description

Fits a One-way model to univariate data grouped by a factor, the result often being displayed using rfs

Usage

oneway(formula, data, location=mean, spread=function(x) sqrt(var(x)))

Arguments

formula
formula of the form y ~ x where y is the numeric response and x is the grouping factor
data
data frame in which the model is to be evaluated
location
function or numeric giving the location statistic to be used for centering the observations, e.g. median, 0 (to avoid centering).
spread
function or numeric giving the spread statistic to be used for scaling the observations, e.g. sd, 1 (to avoid scaling).

Value

  • A list with components
  • locationvector of locations for each group.
  • spreadvector of spreads for each group.
  • fitted.valuesvector of locations for each observation.
  • residualsresiduals (y - fitted.values).
  • scaled.residualsresiduals scaled by spread for their group

See Also

rfs, Lattice