[R] [External] result of mean(v1, v2, v3) of three real number not the same as sum(v1, v2, v3)/3

[Richard M. Heiberger]

you wrote
 mean(mlagFZ1,mlagFZ2,mlagFZ3)

you intended to write
 mean(c(mlagFZ1,mlagFZ2,mlagFZ3))
________________________________
From: R-help <r-help-bounces using r-project.org> on behalf of Sorkin, John <jsorkin using som.umaryland.edu>
Sent: Thursday, May 12, 2022 3:31:51 PM
To: r-help using r-project.org <r-help using r-project.org>
Subject: [External] [R] result of mean(v1, v2, v3) of three real number not the same as sum(v1, v2, v3)/3

I have a very strange problem. I am getting different results from
mean(mlagFZ1,mlagFZ2,mlagFZ3)
vs.
 sum(mlagFZ1,mlagFZ2,mlagFZ3)/3


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

>  sum(mlagFZ1,mlagFZ2,mlagFZ3)/3
[1] -0.201942

R code:
print(mlagFZ1)
print(mlagFZ2)
print(mlagFZ3)
 sum(mlagFZ1,mlagFZ2,mlagFZ3)/3
mean(mlagFZ1,mlagFZ2,mlagFZ3)

output;
> print(mlagFZ1)
[1] -0.3326792
> print(mlagFZ2)
[1] -0.1890601
> print(mlagFZ3)
[1] -0.0840866
>  sum(mlagFZ1,mlagFZ2,mlagFZ3)/3
[1] -0.201942
> mean(mlagFZ1,mlagFZ2,mlagFZ3)
[1] -0.3326792

Can someone tell me what I did wrong?
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