[R] Taking the sum of only some columns of a data frame

[Doran, Harold]

Let's keep r-list on the email per typical protocol. Apply is a function in base R, so you don't need to install it

-----Original Message-----
From: Bruce Ratner PhD [mailto:br at dmstat1.com] 
Sent: Friday, March 31, 2017 1:06 PM
To: Doran, Harold <HDoran at air.org>
Subject: Re: [R] Taking the sum of only some columns of a data frame

Hey Harold:
Thanks for quick reply. 
But, I can't install "apply."

Is there anything you can suggest to get my install of apply on R 3.3.3, or a work around of your original answer?

Thanks, so much. 
Bruce 

______________
Bruce Ratner PhD
The Significant Statistician™




> On Mar 31, 2017, at 12:33 PM, Doran, Harold <HDoran at air.org> wrote:
> 
> apply