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CONCAVE: A curve that is 'bowed-in' toward the origin, like entering a cave. Technically speaking, the slope of a concave curve decreases from left to right as the X-axis variable increases.

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BUSINESS CYCLE PHASES

The recurring, but irregular, pattern of business cycles can be divided into two basic phases--expansion and contraction. An expansion is a period of increasing economic activity and a contraction is a period of declining economic activity. These two phases are marked by two transitions. The transition from expansion to contraction is termed a peak and the transition from contraction to expansion is termed a trough. The early portion of an expansion is often referred to as a recovery.

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Today, you are likely to spend a great deal of time browsing about a thrift store hoping to buy either a solid oak entertainment center or a remote controlled ceiling fan. Be on the lookout for the happiest person in the room.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
"The shifts of fortune test the reliability of friends. "

-- Marcus Tullius Cicero, Roman statesman

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