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Software can be downloaded from The Comprehensive R Archive Network (CRAN).

The user enters commands at the prompt ( by default) and each command is executed one at a time.

At the end of an R session, the user can save an image of the current workspace that is automatically reloaded the next time R is started.

Note that binary operators work on vectors and matrices as well as scalars.

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A function is a piece of code written to carry out a specified task; it may accept arguments or parameters (or not) and it may return one or more values (or not).

Note that by using built-in functions, the only thing you need to worry about is how to effectively communicate the correct input arguments (arglist) and manage the return values (if any).

R offers options to import many file types, from CSVs to databases.

One way to get descriptive statistics is to use the sapply( ) function with a specified summary statistic.

Once installed, they have to be loaded into the session to be used.

At the programs command prompt you can use any of the following.

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