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Calculate Cronbach's alpha coefficient from a matrix or data.frame with more than 2 columns.
CronbachAlpha(X)
Single numeric value of Cronbach's alpha.
A matrix or data.frame with more than 2 columns.
Minato Nakazawa minatonakazawa@gmail.com https://minato.sip21c.org/
Bland JM, Altman DG (1997) Statistics notes: Cronbach's alpha. BMJ, 314: 572.
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)
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