Automated readability index: Difference between revisions

Content deleted Content added
footnoted, added motivation for its relative simplicity
corrected how 'characters' are calculated
Line 7:
</math>
 
where _characters_ is the number of letters, numbers, and punctuation marks, _words_ is the number of spaces, and _sentences_ is the number of sentences. Sentences were counted by hand as each text was typed.
''Characters'' are the number of letters and numbers.
 
As a rough guide, US grade level 1 corresponds to ages 6 to 8. Reading level grade 8 corresponds to the typical reading level of a 14 year-old US child. Grade 12, the highest US secondary school grade before college, corresponds to the reading level of a 17 year-old.