The economists use special economic datas to trace, to forecast and to analyse variations in economy in general and in its separate branches. From different economic datas published by state and other establishments, the economists are interested theme, which one mirror current or future state of economy. These reports are called as economic parameters, because they image state of economy. They can help to the manager to administer the company in changed conditions. Where it is possible to receive economic datas? Except for specialized sources, you can find them and their analysis in business press, specially in the national daily business newspapers. In this publication we shall consider following key economic parameters: * Level of economic growth vs. Price and inflation * Interest rates vs. Unemployment * Construction and sale of housing accommodation vs. Retail trade and sale of new automobiles The largest parameter: a level of economic growth. This basic parameter mirrors percent (interest) of growth of all economy considered. Itself it is defined as out-to-out of economy. The given parameter consists of following summands: consumer spendings, investments, expenditures on public account and net export (export a minus import). It is published monthly. But, unfortunately, it revise later. The difference between primal and final significances can reach one - two percents of interests for a parameter, the average significance constitutes which one approximately three percents of interests. Consider deviations from this three-percentage level and find a trend. The trend is a most relevant element If there is a reduction of economic growth within several months or quarters, that, probably, the conditions of existence of many kinds of business become more difficult. During decrease of growth the buyers spend less, hence, companies do make the same. The companies do not wish to make and to accrue at themselves production, which one does not find sales, and reduce production. If you have noticed, that your business reduces revolutions, would be excellent idea to trace conduct of your buyers and schedules of sales, and, probably, you should reduce production, purchases of raw material and amount accepted on operation. Do not run into a panic, but be specially close during such slowing down. If the economic growth is speeded up, the consumers begin to spend many money. The people feel confidently on the jobs and want to commit more purchases and to use the credit. At such times majority of firms attempt. To forge iron, while is hot , extracting advantages from the created conditions. As well as during slowing down of economic growth rate, you should supervise of conduct of your clients and trace sales. Escape excessive deploying of activity, engaging too plenties of the workers etc. For economy both bad times, and good do not proceed eternally.