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Timeout for Tech: Correlation vs. Causation

Written by Gary T. Fry, Vice President, Fry Technical Services, Inc.; Railway Age Contributing Editor
Figure 1. Correlation does not imply causation. Sales of fingerless gloves and cases of frostbitten fingers both increase in winter months. But fingerless gloves are not a cause of frostbite. (Courtesy of Gary T. Fry.)

Figure 1. Correlation does not imply causation. Sales of fingerless gloves and cases of frostbitten fingers both increase in winter months. But fingerless gloves are not a cause of frostbite. (Courtesy of Gary T. Fry.)

RAILWAY AGE JANUARY 2023 ISSUE: Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Each month, we examine a technology topic that professionals in the railway industry have asked to learn more about. This month, we focus on the issue of correlation vs. causation and how to avoid a common pitfall—mistaking effects as causes.

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