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Averages, relationships, trends and graphs are not what they seem. Statistics can make an important fact look as if it is nothing noteworthy and a trivial fact like there may be more in it.
Writers need statistical methods and statistical terms when reporting data of social and economic trends, but they need to use the words honestly, and readers need an understanding of what they mean. Otherwise, it may result in semantic absurdity.
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“The secret language of statistics, so appealing in a fact-minded culture, is employed to sensationalize, inflate, confuse, and oversimplify.”
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For any statistic to be worth it, it should come from a representative sample of the group it is describing. But a representative sample is near impossible because of lack of time, resources, and other practical reasons. As a result, you are more likely to see a subset based on biases from the method of sampling rather than the representative group itself.
When you see the statistic that, for example, represent the entire nation, ask yourself, “Which part of the nation?”
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There are three common kinds of average:
When a statistic cites the “average”, it could be the mean, median or mode, which can be drastically different. The unspecified “average” is used to prove a point while leaving out any numbers that might question their predetermined point.
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If you want to use a test to measure something or somebody, it is equally important to know the limitations of the test. What can it not measure?
For example, an intelligence test does not measure leadership, creative imagination, diligence, and emotional balance. The test may still be useful for admission to a university or a job, but you should also understand its limitations.
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“As long as the errors remain one-sided, it is not easy to attribute them to bungling or accident.”
Statistics are often used to support a cause or agenda a person believes in, rather than to disprove them. When people err in their use of statistics, it is always in the direction of their beliefs or agenda. So, instead of getting an unbiased view of the world, we get a biased view that other people want us to see.
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“‘Does it make sense?’ will often cut a statistic down to size when the whole rigmarole is based on an unproved assumption.”
Consider what they are saying and why they are saying it. If a statistic doesn’t seem right, or someone arrives at a conclusion that seems questionable, ask “Does it make sense”.
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It describes using one thing as a way to claim proof of something else, even if there exists no correlation between the two.
Meaningless statements:
Expressing the data to suit your view. For instance, express exactly the same fact by calling it a one % return on sales, a fifteen % return on investment, a ten-million-dollar profit, or a decrease of sixty % from last year.
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If B follows A, then A has caused B.
For example:
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IDEAS CURATED BY
CURATOR'S NOTE
This book lays the groundwork for the many ways statistics are used to mislead people. Honest people must learn the tricks of statistics so that they can interpret data intelligently.
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