I want to know how many values of variable X there are in my data. I
don't need to know the frequency distribution of X, I need to know how
many values of X there are. For example, if the true frequency
distribution is:
Value Frequency Pct
1 8 8.0
2 20 20.0
3 30 30.0
4 20 20.0
7 12 12.0
15 10 10.0
then, I only want a count of the Value column (which is 6 in the case
above). My problem is that I -tab1- a variable but there are too many
values for it to run the frequency distribution. I could use by, but that
could get very tedious with counting, and could be prone to error when I
add up across the by variable. I expect there to be something on the
order of 3700 values, but I have to check to be sure.
My check of the manual and the stata web-site turned up nothing, but
perhaps I do not know for what command or keyword I should search.
Ideas appreciated.
Thanks.
Sam
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