Lexical Density Test
The Lexical Density Test is another readability test that is designed to measure the degree of reading difficulty that a text presents. The Lexical (content) density is calculated by the following formula:
Lexical Density = (number of different words) ÷ (total number of words) × 100.
The lexical density of a text is an attempt to measure the proportion of the content (lexical) words over the total words. Texts with a lower density are more easily understood.
A score of 60-70% indicates a text that is lexically dense. A score of 40-50% is indicative of text that is not considered to be dense.
The Lexical Density of this website's web page entitled Easy-To-Understand Writing is:
118 ÷ 237 × 100 = 49.8 %
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