[ ] "Exclude individual with NA in hourly rate" -> "Exclude individual with missing value in hourly rate" (NA isn't universal)
[ ] "12 grade" -> "12th grade"
[ ] "Replace extreme wages values with robust linear model's predicted value" -> "Extreme values in the wages are replaced with predictions from the fitted robust linear model"
[ ] "Subset high school dropouts" -> "Subset to high school dropouts"
Suggested changes: