saving . . . saved "mass" installatiion package has been deleted. "mass" installatiion package has been hidden .
"mass" installatiion package
Title
Question
If this package is not installed, will it create any trouble later?  kindly tell me the remedy.  

R Installing-R-and-RStudio-on-Windows 08-09 min 0-10 sec 13-05-25, 9:26 p.m. gksreeni@gmail.com

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