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ENDPOINT FORMULA: A simple technique for calculating the coefficient of elasticity that estimates the elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of this formula is that percentage changes are calculated based on the initial values of each variable. This is much simpler than the midpoint formula, which is based on the percentage change from an average of the initial and ending values. The primary problem with the endpoint formula is that different elasticity values are obtained for price increases than for price decreases of the same segment of the demand curve.

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MARSHALLIAN CROSS

A diagram illustrating the market model, with price measured on the vertical axis and quantity measured on the horizontal axis, with the law of demand represented as a downward-sloping demand curve and the law of supply represented as an upward-sloping supply curve. The derivation of this name comes from the "Marshall" part of noted economist Alfred Marshall, and the intersection or "cross" of the demand and supply curves achieved at that market equilibrium.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors looking to buy either a replacement battery for your pocket calculator or a how-to book on home remodeling. Be on the lookout for poorly written technical manuals.
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A scripophilist is one who collects rare stock and bond certificates, usually from extinct companies.
"There is no twilight zone of honesty in business. A thing is right or it's wrong. It's black or it's white. "

-- John F. Dodge, automaker

ARIMA
Autoregressive Integrated Moving Average
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