You should now be clear with the distinct nature of variables that arise in different scenarios. In R, you should be able to verify that the data is in the correct format. Further, the important families of random variables are introduced in this chapter, which should help you in dealing with them when they crop up in your experiments. Computation of simple probabilities were also introduced and explained.
In the next chapter you will learn how to perform the basic R computations, creating data objects, and so on. As data can seldom be constructed completely in R, we need to import data from external foreign files. The methods explained help you to import data in file formats such as
.xls. Similar to importing, it is also important ...