unidim {plspm}

Unidimensionality of blocks

Description

Compute unidimensionality indices (a.k.a. Composite Reliability indices)

Usage

  unidim(Data, blocks = NULL)

Arguments

Data

matrix or data frame with variables

blocks

optional list with vectors indicating the variables in each block

Value

A data frame with the following columns:

Block

name of block

MVs

number of manifest variables in each block

C.alpha

Cronbach's alpha

DG.rho

Dillon-Goldstein rho

eig.1st

First eigenvalue

eig.2nd

Second eigenvalue

Author(s)

Gaston Sanchez

See Also

alpha, rho

Examples

## Not run: 
 # load dataset satisfaction
 data(satisfaction)

 # blocks Image and Expectations
 ima_expe = list(Image=1:5, Expec=6:10)

 # compute unidimensionality indices
 unidim(satisfaction, ima_expe)
 
## End(Not run)