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Index numbers are used especially to compare business activity, the cost of living, and employment. They enable economists to reduce unwieldy business data into easily understood terms. In contrast to a cost-of-living index based on the true but unknown utility function, a superlative index number is an index number that can be calculated. [1]
For example, a business that sells tables needs to make annual sales of 200 tables to break-even. At present the company is selling fewer than 200 tables and is therefore operating at a loss. As a business, they must consider increasing the number of tables they sell annually in order to make enough money to pay fixed and variable costs.
A graph of the United States Employment Cost Index from 2001 to August 2018. The employment cost index (ECI) is a quarterly economic series detailing the changes in the costs of labor for businesses in the United States economy. The ECI is prepared by the Bureau of Labor Statistics (BLS), in the U.S. Department of Labor.
A company's earnings before interest, taxes, depreciation, and amortization (commonly abbreviated EBITDA, [1] pronounced / ˈ iː b ɪ t d ɑː,-b ə-, ˈ ɛ-/ [2]) is a measure of a company's profitability of the operating business only, thus before any effects of indebtedness, state-mandated payments, and costs required to maintain its asset base.
Total costs = fixed costs + (unit variable cost × number of units) Total revenue = sales price × number of unit These are linear because of the assumptions of constant costs and prices, and there is no distinction between units produced and units sold, as these are assumed to be equal.
National income (NI) is the sum of employees, proprietors, rental, corporate, interest, and government income less the subsidies government pays to any of those groups. Net national product (NNP) is National Income plus or minus the statistical discrepancy that accumulates when aggregating data from millions of individual reports.
If S + T + M > I + G + X the levels of income, output, expenditure and employment will fall causing a recession or contraction in the overall economic activity. But if S + T + M < I + G + X the levels of income, output, expenditure and employment will rise causing a boom or expansion in economic activity.
In figure 3, the income–consumption curve bends back on itself as with an increase income, the consumer demands more of X 2 and less of X 1. [3] The income–consumption curve in this case is negatively sloped and the income elasticity of demand will be negative. [4] Also the price effect for X 2 is positive, while it is negative for X 1. [3]