Her father is Robert Ellis Silberstein (Jewish). Her mother is Diana Ross (African-American).
If the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.For example you can measure what happens to the demand for expensive red wine when income increases.f the cross price elasticity is positive, then we call such goods Substitutes (example: pizza and burgers -- you usually consume either or). The income elasticity of demand measures the change in the quantity demanded of some good, when the income changes, holding everything else constant.
QuickMBA / Economics / Price Elasticity of Demand. The price elasticity of demand measures the responsiveness of quantity demanded to a change in price, with all other factors held constant.uickMBA / Economics / Price Elasticity of Demand. The price elasticity of demand measures the responsiveness of quantity demanded to a change in price, with all other factors held constant.