What are the formulas R computes the Cronbach alpha?

by guest   Last Updated May 10, 2017 06:19 AM

I was doing Cronbach's alpha test on R using library(psych). It returned the values

raw_alpha std.alpha G6(smc) average_r S/N alpha se

What are the formulas of those statistics? I would like to learn to program them to another program.

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