I have a correlation matrix, how can I calculate Cronbach's alpha of my factors using SAS? I don't have the original data set, just the correlation matrix, N, mean and std. I have a correlation matrix like this: DATA sol (TYPE=CORR);
INPUT _TYPE_ $ _NAME_ $ idealism relativism misanthropy gender attitude;
CARDS;
N . 153 153 153 153 153
mean . 3.64926 3.35810 2.32157 1.18954 2.37276
std . 0.53439 0.57596 0.67560 0.39323 0.52979
corr idealism 1.0000 . . . .
corr relativism -0.0870 1.0000 . . .
corr misanthropy -0.1395 0.0525 1.0000 . .
corr gender -0.1011 0.0731 0.1504 1.0000 .
corr attitude 0.0501 0.1581 0.2259 -0.1158 1.0000
;
proc factor;
var idealism relativism misanthropy gender attitude;
run; I was able to perform factorial analysis with my correlation matrix.
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