Exercise

# Interlude: How R thinks about data (1)

It was mentioned that R stores data in data frames, which you might think of as a type of spreadsheet. Each row is a different observation (a different respondent) and each column is a different variable (the first is `genhlth`

, the second `exerany`

and so on).

This means you can also retrieve values from our data frame using the **indices** (positions) of the rows and columns you want. For example, to see the sixth variable (which happens to be `weight`

) of the 567th respondent, use the format `cdc[567, 6]`

. This is called the **row-and-column notation**. Note that indices start at 1.

Instructions

**100 XP**

- Assign the
`height`

of the 1337th respondent to`height_1337`

using the row-and-column notation. (Use`names`

to see what the index of`height`

is.) - Assign the
`weight`

of the 111th respondent to`weight_111`

using the row-and-column notation.