remove.na.levels.Rd
`remove.na.levels()` processes a factor variable that includes NA as a level, removing the level while preserving the NA responses.
remove.na.levels(x)
The same factor variable with NA levels explicitly marked as NA.
# As seen in the table below, this factor variable has `NA` as a level.
table(bns2_pkg_data$q13.na)
#>
#> Associate's degree High school diploma or GED
#> 3 12
#> Less than high school Other/Unknown
#> 25 2
#> Some college <NA>
#> 7 1
# Applying `remove.na.levels` TO remove the `NA` level.
remove.na.levels(bns2_pkg_data$q13.na) |>
table()
#>
#> Associate's degree High school diploma or GED
#> 3 12
#> Less than high school Other/Unknown
#> 25 2
#> Some college
#> 7