Estimate Means Subsets

Provides the confidence intervals for a mean contrast and the mean subsets that comprise that contrast.

Usage

# S3 method for data.frame
estimateMeansSubsets(frame, contrast, conf.level=.95, labels=NULL)

# S3 method for formula
estimateMeansSubsets(formula, contrast, conf.level=.95, labels=NULL)

# S3 method for wsm
estimateMeansSubsets(moments, corrs, contrast, conf.level=.95, labels=NULL)

# S3 method for bsm
estimateMeansSubsets(moments, contrast, conf.level=.95, labels=NULL)

Arguments

frame

a set of (non-empty) numeric vectors of data values

formula

a formula of the form lhs ~ rhs where lhs is a numeric variable giving the data values and rhs a factor giving the corresponding groups

moments

a matrix/frame of descriptive/summary statistics

corrs

a matrix/frame of correlations among the measures

contrast

a vector of codes for the contrast among all means

conf.level

confidence level of the interval

labels

custom labels for the subsets

Value

The returned frame contains the following components:

Est

the subset means for the variables or groups and the difference

SE

the standard errors of the subset means for the variables or groups and the difference

df

the degrees of freedom of the subsets for the variables or groups and the difference

LL

the lower limit of the confidence interval of the subset means and the difference

UL

the upper limit of the confidence interval of the subset means and the difference