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Readability Tests

The purpose of a readability test is to provide a numerical score that will indicate the level of difficulty that a reader will experience with a particular text. It may not be possible to reduce language to numbers for the purpose of statistical analyses. Nevertheless, readability tests are interesting and can provide a crude indication of the difficulty of a text.

Here are some of the better known readability tests and indicators:

Flesch Reading Ease Formula

Flesch-Kincaid Grade Level

The Coleman-Liau Index

Gunning Fog Index

The Lexical Density Test

Passive Index

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