CronbachAlpha {fmsb}R Documentation

Calculate Cronbach's alpha coefficient.

Description

Calculate Cronbach's alpha coefficient from a matrix or data.frame with more than 2 columns.

Usage

CronbachAlpha(X)

Arguments

X

A matrix or data.frame with more than 2 columns.

Value

Single numeric value of Cronbach's alpha.

Author(s)

Minato Nakazawa (minato-nakazawa[atmark]umin.net)

References

Bland JM, Altman DG (1997) Statistics notes: Cronbach's alpha. BMJ, 314: 572.

Examples

 QUEST <- data.frame(
  Q1=c(1,5,2,3,4,2,3,4,3,2), 
  Q2=c(2,4,1,2,4,1,2,5,2,1), 
  Q3=c(2,5,1,3,3,2,2,4,2,2))
 CronbachAlpha(QUEST)

[Package fmsb Index]