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Decil

Decil je katerakoli od devetih vrednosti kvantilov, ki delijo urejeno množico slučajnih spremenljivk na deset enakih delov. Torej imamo devet vrednosti, ki delijo populacijo (devet decilov).

Decile označujemo z D. Tako so oznake za devet decilov D1, D2, itd. do D9

  • Prvi decil (D1) je vrednost od katere je 10% vrednosti slučajne spremenljivke manjših in 90% vrednosti večjih. Prvi decil je enak 10-temu percentilu.
  • Drugi decil (D2) je vrednost od katere je 20% vrednosti slučajne spremenljivke manjših in 80% večjih.
  • ….
  • Peti decil (D5) je vrednost od katere je 50% vrednosti slučajne spremenljivke manjših in 50% podatkov večjih od vrednosti petega decila. Peti decil je tudi enak drugemu kvartilu oziroma mediani. Enak je tudi 50-temu percentilu.
  • …..
  • Deveti decil (D9) je vrednost od katere je 90% vrednosti slučajne spremenljivke manjših in 10% vrednosti večjih. Deveti decil je enak 90-temu percentilu.
Posamezni decili in povezava z ostalimi kvantili.

Glej tudi

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Decil
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