Exercise

Choosing the right exercise type

Let’s look at an exercise on importing data. The students have just learned the following things:

The read.csv() function can be used to import CSV files in R.
Columns can be converted to a factor using as.factor().
To inspect the structure of the resulting dataframe str() can be called.

This will be the first exercise where students combine these concepts, so it is a good idea to break down this exercise into smaller steps. Each step will allow them to focus on a specific concept.

Instructions 1/2

XP

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Look at the sample code and think about which exercise type could help guide the student.
Use the hint by clicking Take Hint below if you're not sure.
Go ahead and hit the Submit Answer button