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Welcome to Part 5! In this part of the course we'll deal with special values you can encounter in data. First, we'll talk about missing values and how they can influence your analysis. Then we'll explain how R can represent categories.


Display the first 10 values of the yard_area column of the houses data frame.

Do you notice something strange in the output?

Stuck? Here's a hint!

In order to display the first 10 values, you will have to use the head() function. Remember that by default it displays the first six rows. You can change that by providing the second argument.