Word.ws English Dictionary

chi-by-eye

chi-by-eye noun: the practice of deciding between statistical models based on a plot, rather than a formal procedure.

Noun

chi-by-eye (uncountable)

  1. (humorous) the practice of deciding between statistical models based on a plot, rather than a formal procedure.
    • They deem a fit acceptable if a graph of data and model "looks good." This approach is known as chi-by-eye. Luckily, its practitioners get what they deserve.2007, William H. Press, Saul A. Teukolsky, William T. Vetterling, Brian P. Flannery, Numerical Recipes: The Art of Scientific Computing, page 774
    • Their business prospects and earnings are correlated, and this can be observed by visually plotting their stock prices. Statisticians often call this "chi by eye."2011, Steven P. Greiner, Ben Graham Was a Quant : Raising the IQ of the Intelligent Investor, page 16

Origin of chi-by-eye

Alluding to the χ² test ("chi squared test") used to formally test a statistical hypothesis.

Questions about chi-by-eye

What does chi-by-eye mean?
Chi-by-eye means the practice of deciding between statistical models based on a plot, rather than a formal procedure.
What part of speech is chi-by-eye?
Chi-by-eye is a noun.

Words near chi-by-eye in the dictionary

  1. chi ko pek
  2. chi ko peks
  3. chi kofte
  4. chi kung
  5. Chi-an
  6. chi-by-eye
  7. chi-chi
  8. chi-ching
  9. Chi-chou
  10. Chi-hsi
  11. chi-ike

Source and license

Adapted from Wiktionary: chi-by-eye (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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