Engel's coefficient; proportion of one's income spent on food
Gini coefficient; Gini's coefficient
derivative; differential coefficient
coefficient of restitution
angel's index; proportion of one's income spent on one's children
dispersion coefficient (magnetic leakage coef.)
coefficient of variation; variation coefficient
coefficient of kinematic viscosity; dynamic coefficient of viscosity; kinematic viscosity
Gini coefficient; Gini's coefficient
coefficient of determination
bulk coefficient (viscosity, heat transfer, etc.)
proportion of one's income spent on one's dog
Spearman's rank correlation coefficient
specular reflection coefficient
coefficient of linear expansion
coefficient unit; scale multiplier
thermal expansion coefficient
coefficient of earth pressure at rest
diffuse reflection coefficient