Exactly what the subject line says. Given, for example, a correlation matrix of y1-y6 in text format, read it into sas and use that matrix as input to proc corr to compute the reliability of the scale defined by y1-y6.
Reading a correlation matrix should not be any different than reading in any other type of data.
What is your formula for calculating reliability?
How would you calculate it from the original data?
Please share an example input dataset and the expected result for that data.
A correlation matrix cannot be input to PROC CORR.
How do you plan to compute reliability?
Please show the text of your "correlation" matrix.
Type=Corr data sets have to be of very specific structures we need to see if you even have all of the required elements. You may want to search the online help for "Type=corr datasets" to see the basic details.
It is likely better to provide the raw data used to make your correlation matrix if available and let Proc Corr make the set or do the analysis on the raw data.
https://support.sas.com/kb/30/333.html#errinvar
proc corr data=sashelp.class alpha;
var weight height age;
run;
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