biāozhǔn piānchā

== Mandarin == === Romanization === biāozhǔn piānchā (Zhuyin ㄅㄧㄠ ㄓㄨㄣˇ ㄆㄧㄢ ㄔㄚ) Hanyu Pinyin reading of 標準偏差 / 标准偏差