翻訳と辞書 Words near each other ・ Parity Committee for the Reconstruction of the Fourth International ・ Parity drive ・ Parity flag ・ Parity function ・ Parity game ・ Parity learning ・ Parity of a permutation ・ Parity of esteem ・ Parity of zero ・ Parity P ・ Parity plot ・ Parity price ・ Parity problem ・ Parity problem (sieve theory) ・ Parity product ・ Parity progression ratios ・ Parity-check matrix ・ Pariu cu viața ・ Pariu-ye Arab ・ Parium ・ Pariva Pranati ・ Parivaar (1987 film) ・ Parivach Zabandi Kayi ・ Parivar Vichora ・ Parivara ・ Parivartan ・ Parivartana ・ Parivartana (1975 film) ・ Parivarthanam ・ Parivaz Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Parity progression ratios ： ウィキペディア英語版 Parity progression ratios A parity progression ratios (PPR) is a measure commonly used in demography to study fertility. The PPR is simply the proportion of women with a certain number of children who go onto have another child. Calculating the PPR, also known as $a\_x$, can be achieved by using the following formula: $a\_x\; =\; \backslash text\; x+1\; \backslash text\; /\backslash text\; x\; \backslash text$〔Hinde, A (1998) "Demographic Methods", Hodder Arnold Publication.〕 In more developed countries where two child families are seen as the norm $a\_2$ (or the proportion of women with two children who go on to have a third) is of critical importance in determining overall fertility levels. $a\_0$ is simply the proportion of women who become mothers. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parity progression ratios」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.