an economic indicator is a statistic about an economic activity. economic indicators allow analysis of economic performance and predictions of future performance . one application of economic indictors is the study of business cyclees.economic indicators include various indices,earnings reports, and economic summaries. examples: unemployment rate,quits rate,housing starts,consumer price index (a measure for inflation) ,consumer leverage ratio, industrial production, bankruptcies, gross domestic product, broadband internet penetration ,retail sales, stock market prices, money supply changes. economic indicators can be classified into three categories according to their usual timing in relation to the business cycle: leading indicators,lagging indicators,and coincident indicators. some meaning of indicator are: indicator in arabic is (muasher) that means pointer, in the farsi is (shakhes) that means shower value of a random variables one that indicates, especially:
a.A pointer or an index.
b.An instrument used to monitor the operation or condition of an engine,furnace,electrical network ,reservoir, or other physical system: a meter or gauge.
c. the needle ,dial, or other registering device on such an instrument .