- 劲度系数 jìndùxìshù spring constantspring constant (in Hooke's law)
- 吉尼系数 Jíníxìshù Gini coefficient(Taiwan) Gini coefficient
- 二项式系数 èrxiàngshìxìshù binomial coefficient(mathematics) binomial coefficient
- 基尼系数 Jīníxìshù Gini coefficientA measure of statistical dispersion used to represent income or wealth inequality.
- 置信系数 zhìxìnxìshù confidence coefficientconfidence coefficient (math.)
- 坚尼系数 Jiānníxìshù Gini coefficientthe Gini coefficient (specifically used in Hong Kong)