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Jyutping sei3 fan1 wai6 sou3
Pinyin sì fēn wèi shù

Definitions (Wiktionary)
  1. noun
    quartile

四分位數 [---数]

Jyutping
Pinyin sì fēn wèi shù

Definitions (CC-CEDICT)
  1. quartile (statistics)