Installing and Updating R
When you purchase SAS, WPS or SPSS, they sell you a “binary”version. That is one that the company has compiled for you from the “source code” version they wrote using languages such as C, FORTRAN, or Java. You usually install everything you purchased at once and do not give it a second thought. Instead, R is modular. The main installation provides Base R and a recommended set of add-on modules called packages. You can install other packages later when you need them. With thousands to choose from, few people need them all.
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