英语词汇“aggregation”的翻译、意思、用法、释义-英汉经管词典

单词	aggregation
释义	aggregation The relation between the behaviour of totals and that of their components. Suppose, for example, that for each of N individuals i = 1, 2,…,N, i's consumption, C_i, is given by C_i = a_i + b_i Y_di, where Y_di is i's disposable income. Can these consumption function be aggregated to give a function of the form C = a + bY_d, where C and Y_d are national aggregates? If all the b_i were equal, it would not matter if the a_i differed, as they could simply be added. If the b_i vary, however, a precise aggregate relation can only be derived from the individual consumption functions if we know how marginal changes in income will be distributed among the N individuals. If this is not known, any aggregate consumption function will only hold approximately. Similar problems arise with most economic aggregates.
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