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When conducting telephone surveys, randomly selecting contacts (for example, from the White Pages) helps to eliminate sampling frame errors.
Consumer Price Index
An indicator assessing the mean fluctuation over time in the expenses borne by city dwellers for a designated assortment of consumer products and services.
Inflation Rate
The rate at which the general level of prices for goods and services is rising, and, subsequently, purchasing power is falling, often expressed as a percentage.
Base Year
A reference year against which economic growth, price levels, and other data are measured over time.
Consumer Price Index
An economic indicator that measures the average change over time in the prices paid by consumers for a basket of goods and services.
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