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In statistics, Cook's distance or Cook's D is a commonly used estimate of the influence of a data point when performing a least-squares regression analysis. [1] In a practical ordinary least squares analysis, Cook's distance can be used in several ways: to indicate influential data points that are particularly worth checking for validity; or to indicate regions of the design space where it ...
For instance, in calculating yield return, we might calculate the price of the security at the start and end of the calculation interval, but using the yield at the beginning of the interval. Then the difference between the two prices may be used to calculate the security's return due to the passage of time.
Median income can be calculated by household income, by personal income, or for specific demographic groups. The measurement of income from individuals and households, which is necessary to produce statistics such as the median, can pose challenges and yield results inconsistent with aggregate national accounts data.
In finance, bootstrapping is a method for constructing a (zero-coupon) fixed-income yield curve from the prices of a set of coupon-bearing products, e.g. bonds and swaps. [ 1 ] A bootstrapped curve , correspondingly, is one where the prices of the instruments used as an input to the curve, will be an exact output , when these same instruments ...
Alaska 2-person family middle-class income range: $56,330.92 to $168,152 3-person family middle-class income range: $60,428.64 to $180,384 4-person family middle-class income range: $69,665.26 to ...
Figure 1: An increase in the income, with the prices of all goods fixed, causes consumers to alter their choice of market basket. The extreme left and right indifference curves belong to different individuals with different preferences, while the three central indifference curves belong to one individual for whom the income-consumption curve is shown.
Dividends are distributions from companies to shareholders. Although some companies pay dividends in shares of their stock, traditional dividends are distributed in cash, often quarterly. For...
In welfare economics, a level of feasible output possibilities is commonly distinguished from the distribution of income for those output possibilities. But in the formal theory of social welfare, rules for selection from feasible distributions of income and output are a way of representing normative economics at a high level of generality.