[R] Fw: Averaging without NAs

Ng Bo Lin ngbolin91 at gmail.com
Thu Mar 2 12:01:16 CET 2017

Hi Elahe,

You can do so using the mean function, mean(), by specifying an additional argument, na.rm = TRUE. In this case, you specify that you wish to remove (rm) all NA values in the columns.

—> mean($X2016.Q1, na.rm = T).

By default, na.rm is set to FALSE, so mean() will return a NA value.

Hope this helps!

Bo Lin
> On 2 Mar 2017, at 6:57 PM, ch.elahe via R-help <r-help at r-project.org> wrote:
> The question seems easy but I could not find an answer for it. I have the following column in my data frame and I want to take average of the column excluding the number of NAs. 
> $X2016.Q1 : int 47 53 75 97 NA NA 23 NA 43 NA ....
> Does anyone know how to do that?
> Thanks for any help 
> Elahe
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