On Thu, 12 May 2022 19:31:51 +0000
"Sorkin, John" <jsor...@som.umaryland.edu> wrote:

> > mean(mlagFZ1,mlagFZ2,mlagFZ3)  
> [1] -0.3326792

match.call(mean.default, quote(mean(mlagFZ1, mlagFZ2, mlagFZ3)))
# mean(x = mlagFZ1, trim = mlagFZ2, na.rm = mlagFZ3)

mean() takes a vector to compute a mean of and additional arguments,
unlike sum(), which takes ... (almost arbitrary arguments) and sums all
of them. Unfortunately, the "trim" argument is documented to accept any
number and the na.rm argument is silently reinterpreted as logical in
your case.

-- 
Best regards,
Ivan

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