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DEMOGRAPHIC VARIABLES: Characteristics of the aggregate population that marketers use to segment the market, including age, ethnicity, income, education, gender, and race. Other characteristics include occupation, family size, religion, and social class. These characteristics are the link to buyers' wants and needs and affect purchasing behavior. By carefully studying population groups marketers develop marketing mixes that maximize customer activity.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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Today, you are likely to spend a great deal of time at the confiscated property police auction hoping to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for telephone calls from long-lost relatives.
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In 1914, Ford paid workers who were age 22 or older $5 per day -- double the average wage offered by other car factories.
"There is a way to look at the past. Don't hide from it. It will not catch you - if you don't repeat it."

-- Pearl Bailey, Singer and Actress

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