Word Frequency Tool 3

The Word Frequency Analyser also shows a Word List Breakdown, which displays words by their length: 3 letter words 612 20.0% 4 letter words 510 16.7% 2 letter words 474 15.5% 5 letter words 397 13.0% 6 letter words 266...

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Source: TDOL's Language Archive

Is the analysis based on the theory that the more short words the better?

:)

With the Fog index, with Lexical Density, word length is irrelevant, so you get two different views. ;-)

But what determines readability? What is the formula?

:)

I'm not sure of their accuracy, but one looks at the concentration of words, which seems a fairer principle, and the other at word length.

Here are the actual formulae:
http://www.usingenglish.com/profiles...es/000083.html

I'm not sure they measure readability, but they do give clues as to what is going on in the text once you start using them and start to see patterns and changes. ;-)

Thanks.

:D