INDEX: A measure of the relative average of a group of items compared to a given base value. Index measures are commonly used in economics to combine and compare diverse measures. One common type of index measure is for prices, such as the Consumer Price Index and the Dow Jones Industrial Average of corporate stock prices. Another noted type of index measure is to track macroeconomic activity, especially the index leading economic indicators. Indexes are usually weighted averages rather than simple arithmetic means that are measured relative to a base value or period. The Consumer Price Index, for example, measures the prices of consumer good, weighted by the quantities purchased. The value of a given period is then stated relative to a base year value, which generates a pure, "unitless" number in the range of 100 (give or take).

     See also | Consumer Price Index | Dow Jones averages | Standard & Poor's 500 | NASDAQ | GDP price deflator | leading economic indicator | lagging economic indicator | coincident economic indicator |

INDEX, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2021. [Accessed: October 24, 2021].

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The positive slope of the government purchases line is also termed the marginal propensity for government purchases (MPG). This slope is greater than zero but less than one, reflecting induced government purchases. The slope of the government purchases line affects the slope of the aggregate expenditures line and thus also affects the magnitude of the multiplier process.

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex wanting to buy either a weathervane with a chicken on top or a flower arrangement with daisies and carnations for your uncle. Be on the lookout for slightly overweight pizza delivery guys.
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