sigmaKK [ˋsɪgmə] /ˈsɪɡmə/發音名詞1西格瑪、希臘字母ΣThe symbol on the board is a lowercase sigma, not an s.黑板上那個符號是小寫的西格瑪,不是英文字母s。2標準差統計Anything beyond three sigma is treated as an outlier here.在這裡,超過三個標準差的數值都被視為離群值。3求和符號數學The big sigma tells you to add up every term in the series.那個大寫求和符號表示要把數列中每一項都加起來。4獨行俠、特立獨行者俚語He calls himself a sigma and eats lunch alone every day.他自稱是獨行俠,每天都自己一個人吃午餐。形容詞1酷、帥氣、厲害俚語Walking out without saying a word was such a sigma move.一句話都不說就走出去,這舉動實在有夠帥。