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