Question

Spelling errors in a text are either "nonword errors" or "word errors." A nonword error produces a string of letters that is not a word, as when "the" is typed as "teh." Word errors produce the wrong word, as when "loose" is typed as "lose." Nonword errors make up 26% of all errors. A human proofreader will catch 96% of nonword errors and 63% of word errors.