Hi everyone,
I want to do two sample ttest with standard error cluster. I googled that proc mixed would work, but I understand that it also has fixed effect. But I don't want fixed effect, I only want error cluster.
My data looks like this
fundid date var1 group
group is dummy variable.
I want to cluster at fund lever, that is fundid
my code is
proc mixed;
class fundid group;
model var1=group;
random fundid;
ismeans group/diff;
run;
Can you let me know whether it's correct? do I have fixed effect included in the test?
Thank!