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Pentile vs Undefined - What's the difference?

pentile | undefined |

As a noun pentile

is (statistics) any of the four points that divide an ordered distribution into five parts, each containing a fifth (20%) of the population used commonly for income distributions.

As an adjective undefined is

lacking a definition or value.

pentile

English

Noun

(en noun)
  • (statistics) Any of the four points that divide an ordered distribution into five parts, each containing a fifth (20%) of the population. Used commonly for income distributions.
  • (statistics) Any one of the five groups.
  • *Her income placed her in the lowest pentile of the income distribution.

    • See also

    * quartile * decile * percentile

    References

    * [http://www.idahopower.com/pdfs/energycenter/irp/2006/Presentation111705.pdf][http://www.google.com/search?as_q=pentile&num=10&hl=en&btnG=Google+Search&as_epq=&as_oq=percentile&as_eq=dictionary+matrix+pixel+rgbw&lr=lang_en&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images] ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined