Dear All,
I have two questions regarding the -missing- command (or function?).
First question:
I'm not clear about exactly what -missing- does. An example will clarify my
concern. I have a dataset containing 11 variables (the first is -clust- and
the last is -s11aq13-). One of the variables is -trexpcd-, and the total
number of observations is 4872. I gave the following commands and had the
shown output:
count if mi(trexpcd)
4649
count if mi(clust-s11aq13)
82
My understanding of the online -help- is that -missing- evaluates the number
of observations for which any of the arguments is missing. So, for the
second command, since -trexpcd- is one of the arguments, I expected the
result to be a number which is at least equal to 4649.
Can anyone please show me what I'm missing?
Second question:
Also, I had the following result:
count if !mi(clust-s11aq13)
4790
Does !mi() evaluate the number of observations for which none of the
arguments is missing? Thank you.
