Chapter 02 – Developing Successful Organizational and Marketing Strategies
WHAT IS YOUR OWN FOG INDEX? HANDOUT2
Briefly, review this handout on how to calculate a Fog Index using the writing sample below
from The New York Times.
How to Calculate a Fog Index. Let’s calculate a Fog Index for the writing sample below, which
was taken from a recent article in The New York Times newspaper. The topic concerns the changes that
are about to occur in the Graduate Record Exam (GRE), the test needed for admission to many graduate
schools.
“Although the GRE still includes sections on verbal reasoning, quantitative reasoning, and
analytical writing, each section is being revised. The new verbal section, for example, will eliminate
questions on antonyms and analogies. On the quantitative section, the biggest change will be the addition
of an online calculator. The writing section will still have two parts, one asking for a logical analysis and
the other seeking an expression of the student’s own views. The biggest difference is that the prompts the
students will receive will be more focused, meaning that our human raters will know unambiguously that
the answer was written in response to the question, not memorized,” said David G. Payne, who heads the
GRE program for the testing service.”
We can calculate a Fog Index for The New York Times passage using these steps:
1. Select a passage that is about 100 words.
2. Count the number of words in the passage (W): ………………………………………………..120
3. Count the number of sentences (S): …………………………………………………………………….5
4. Count the number of complex words or polysyllables (3+ syllables) in the passage
but exclude proper nouns (e.g. Chicago) or suffixes (-es, -ed, -ing) as a syllable
(CW): ……………………………………………………………………………………………………………14
5. Divide the number of words in the passage by the number of
sentences: ………………………………………………………………….. (W ÷S) or (129 ÷5) = 24.0
6. Divide the number of complex words in the passage by the number of words,
7. Fog Index = [0.4 × ((W ÷ S) + ((CW ÷ W) × 100))]
= [0.4 × ((120 ÷ 5) + ((14 ÷ 120) × 100))]
Calculating a Fog Index for Your Writing. For the sample of writing you brought to class,
calculate your own Fog Index.
Getting Feedback. Share your writing sample in your group. See if they agree with the
readability of your sample that is indicated by its Fog Index. What parts are easy to read? What parts are
bit difficult to understand?