The SMOG Grade (Simple Measure Of Gobbledygook) for English texts is an estimate of the number of years of United States education needed to fully comprehend the text. This emphasis on full comprehension distinguishes this measurement from other readability scores.
SMOG: = 1.043 * sqrt( complex words * (30 / sentences) ) + 3.1291
The result is an estimate of the number of years of education needed to understand a piece of writing.
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