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| | Hi! <br>My name is Lashawn and I'm a 24 years old girl from Canada.<br><br>Also visit my web site: [http://adcollege.cafe24.com/xe/?document_srl=1400109 sed tv wiki] |
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| The '''Dale–Chall readability formula is a''' [[readability test]] that provides a numeric gauge of the comprehension difficulty that readers will have when reading a text. It uses a list of words that groups of fourth-grade American students could reliably understand, considering any word not on that list to be difficult.
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| ==History==
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| The formula was inspired by [[Rudolf Flesch]]'s [[Flesch–Kincaid readability test]] which used word length to determine how difficult a word was for readers to understand. [[Edgar Dale]] and [[Jeanne Chall]] instead used a list of 763 words that 80% of fourth-grade students were familiar with to determine which words were difficult. The Dale-Chall Readability Formula was originally published in their 1948 article ''A Formula for Predicting Readability''<ref>{{Cite journal |author=[[Edgar Dale|Dale E]], [[Jeanne Chall|Chall J]] |year=1948 |title=A Formula for Predicting Readability |journal=Educational Research Bulletin |volume=27 |pages=11–20+28}}</ref> and updated in 1995 in ''Readability Revisited: The New Dale-Chall Readability Formula'', which expanded the word list to 3,000 familiar words.<ref>{{cite isbn|1571290087}}</ref>
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| ==Formula==
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| The formula for calculating the raw score of the Dale–Chall readability score is given below:
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| :<math> | |
| 0.1579 \left (\frac{\mbox{difficult words}}{\mbox{words}}\times 100 \right) + 0.0496 \left (\frac{\mbox{words}}{\mbox{sentences}} \right)
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| </math>
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| If the percentage of difficult words is above 5%, then add 3.6365 to the raw score to get the adjusted score, otherwise the adjusted score is equal to the raw score.
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| {| class="wikitable" border="1"
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| ! Score
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| ! Notes
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| | 4.9 or lower
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| | easily understood by an average 4th-grade student or lower
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| |-
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| | 5.0–5.9
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| | easily understood by an average 5th or 6th-grade student
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| |-
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| | 6.0–6.9
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| | easily understood by an average 7th or 8th-grade student
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| |-
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| | 7.0–7.9
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| | easily understood by an average 9th or 10th-grade student
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| |-
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| | 8.0–8.9
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| | easily understood by an average 11th or 12th-grade student
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| |-
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| | 9.0–9.9
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| | easily understood by an average 13th to 15th-grade (college) student
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| |-
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| | 10.0 or higher
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| | easily understood by an average college graduate
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| |-
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| |}
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| == See also ==
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| *[[Flesch–Kincaid readability test]]
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| *[[Gunning fog index]]
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| *[[Coleman-Liau Index]]
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| *[[Automated Readability Index]]
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| *[[SMOG (Simple Measure Of Gobbledygook)]]
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| *[[Accessible publishing]]
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| *[[Readability]]
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| == References ==
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| {{Reflist|1}}
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| {{DEFAULTSORT:Dale-Chall readability formula}}
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| [[Category:Readability tests]]
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Hi!
My name is Lashawn and I'm a 24 years old girl from Canada.
Also visit my web site: sed tv wiki