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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is a measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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LAGGING ECONOMIC INDICATORS

Seven economic statistics that tend to move up or down a few months AFTER business-cycle expansions and contractions. Most importantly, these measures indicate peak and trough turning points about three to twelve months after they occur. Lagging economic indicators are one of three groups of economic measures used to track business-cycle activity. The other two are coincident economic indicators and leading economic indicators.

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APLS

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Today, you are likely to spend a great deal of time wandering around the downtown area wanting to buy either an AC adapter for your CD player or storage boxes for your family photos. Be on the lookout for broken fingernail clippers.
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Potato chips were invented in 1853 by a irritated chef repeatedly seeking to appease the hard to please Cornelius Vanderbilt who demanded french fried potatoes that were thinner and crisper than normal.
"If you are neutral in situations of injustice, you have chosen the side of the oppressor. If an elephant has its foot on the tail of a mouse and you say that you are neutral, the mouse will not appreciate your neutrality."

-- Desmond Tutu, activist

BPEA
Brookings Papers on Economic Activity
A PEDestrian's Guide
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