Suggest/data-import.qmd (#1659)

* probably a typo, and no mention about fixing `student_id` column below.

* "and" is better than "so"

data-import.qmd

@@ -88,7 +88,7 @@ students
 
 In the `favourite.food` column, there are a bunch of food items, and then the character string `N/A`, which should have been a real `NA` that R will recognize as "not available".
 This is something we can address using the `na` argument.
-By default, `read_csv()` only recognizes empty strings (`""`) in this dataset as `NA`s, we want it to also recognize the character string `"N/A"`.
+By default, `read_csv()` only recognizes empty strings (`""`) in this dataset as `NA`s, and we want it to also recognize the character string `"N/A"`.
 
 ```{r}
 #| message: false
@@ -131,7 +131,7 @@ students |>
 Note that the values in the `meal_plan` variable have stayed the same, but the type of variable denoted underneath the variable name has changed from character (`<chr>`) to factor (`<fct>`).
 You'll learn more about factors in @sec-factors.
 
-Before you analyze these data, you'll probably want to fix the `age` and `id` columns.
+Before you analyze these data, you'll probably want to fix the `age` column.
 Currently, `age` is a character variable because one of the observations is typed out as `five` instead of a numeric `5`.
 We discuss the details of fixing this issue in @sec-import-spreadsheets.