Usage History of 'posttests'

The following chart shows how frequently 'posttests' appeared in printed materials over time. For example, the word 'posttests' occurred 6 times in books in 1933 and 2,006 times in 2008. From 1933 to 2008, the word 'posttests' was used a total of 52,225 times in books scanned by Google. See Reference: Google Ngram project.

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