sample and population 中文意思是什麼

sample and population 解釋
樣本及總體,樣品及全部
  • sample : n 1 樣品，貨樣。2 標本；榜樣，實例。3 【統計】典型取樣，抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  1. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  2. The regression line is derived from a sample and not from the entire population.

    樣本回歸線是根據一個樣本而不是根據完全總體推導出來的。
  3. The sample contains both filling and pie crust, just as the population does.

    樣本與總體一樣，包括餡和皮。
  4. A population is a whole, and a sample is a fraction or segment of that whole.

    總體是所研究的現象全體；樣本則是總體中的一部分。
  5. This formula used inverse regression and data fusion technical and maximum likelihood theory, then this method enabled random sample value obtained in ultrasonic and rebound method of different detection population to mix together effectively, and reach estimation of concrete strength

    該公式利用逆回歸理論、數據融合技術和最大似然原理，將回彈值和聲速值分別看作被解釋變量，將來自超聲法和回彈法不同量綱的檢測數據進行有效融合，得出混凝土強度的推定值，該推定結果具有無偏性和方差最小性質。
  6. By sun, bo ( major : marine biology ) directed by professor zhang, guofan and dr. liu, xiao population genetics of four argopecten irradians cultured populations was analyzed by using random amplification polymorphism dna ( rapd ) techniques. and partial dna sequences of the internal transcribed spacers ( its ) from four representative samples ( one sample represent for each population ) were amplified by pcr and sequenced in order to stress the phylogenetic relationships of the four populations. besides, by rapd technique, two argopecten irradians families were studied to examine whether the hybridization experiments were successful and which family was more suitable to be materials in future genetic linkage map construction

    本文以海灣扇貝4個養殖群體為研究對象，採用隨機引物多態性dna （ rapd ）技術進行了群體遺傳學研究，並嘗試使用4個群體中代表個體的內轉錄間隔區（ its ）序列比對分析結果作為參考；另外，本文還運用rapd技術對人工異體交配的2個海灣扇貝家系的雜交成功率進行了分析，均獲得成功證實，並評估了兩個家系構建遺傳連鎖圖譜的潛力。
  7. Determining the sample size is crucial for a survey sampling design, for which traditional approaches have to seek some information on population variance or survey costs, however, which may result in either sample size too small and real precision undre desired level, or sample size too large and waste of survey costs

    摘要樣本量的確定是抽樣設計中的關鍵問題，傳統方法利用總體方差和調查費用的有關信息來確定樣本量可能產生兩種結果，一種是樣本量過低，無法保證希望的估計精度要求；一種是樣本量過高，導致調查經費的浪費。
  8. This essay analyses the principal factors affecting the difference in wage earnings of the floating population in xiamen city through utilizing the data from a series sample survey and establishing a multivariate regression model

    摘要本文利用廈門市流動人口系列抽樣調查數據，通過建立一個多元回歸模型來分析流動人口工資收入差異的主要影響因素。
  9. Based on the data from a sample survey entitled study of population childbearing willing in guangdong conducted by population and family planning committee of guangdong province and population institute of sun yat - sen university in october 2004, this paper analyzes the effect of individual features, policy and motives of chlidbearing on the desired childbearing number of guangdong population

    摘要本文利用廣東省人口與計劃生育委員會與中山大學人口研究所2004年10月進行的題為「廣東省人口生育意願研究」的抽樣調查數據，分析了個人因素、政策因素以及生育目的對廣東人口意願生育數量的影響。
  10. In this paper, i study above two issues and gain some results as follows : 1. under population follow normal distribution hypothesis, designing combine median - range adaptive control charts with variable sampling interval, variable sample size and variable control limit. it may be regarded as previously median - range extension

    在假設總體服從正態分佈的條件下，設計了抽樣區間，樣本容量和控制限都變化的全變化參數的中位值-極差聯合控制圖。它是以前的中位值-極差聯合動態控制圖的推廣。
  11. The results of population censusesby - censuses form the corner stone of the system. these benchmark data are taken together with statistical data generated from administrative systems ( such as birth, death and passenger movement records ) and sample surveys ( in particular the continuous general household survey ) to form a population statistical database which serves a multitude of purposes, including amongst which the compilation of population estimates

    這些基準資料，加上透過其他行政系統（例如出生、死亡及出入境記錄）及抽樣統計調查（特別是持續性的綜合住戶統計調查）所得資料，編制而成的統計數據，連結成一個人口統計數據資料庫，數據可用於編制人口估計及其他眾多用途。
  12. It was a sample enquiry on a broad range of demographic and socioeconomic characteristics of the population

    中期人口統計乃一抽樣統計調查，用以搜集有關人口的廣泛社會及經濟特徵數據。
  13. In this paper, we estimated the magnitude and the proportion of the aged poor population by rural and urban and by provincial - level category in shandong, based on the fifth national census and the " china cross - sectional rural - urban elderly sample survey " conducted by the china aging research center in december 2000

    摘要本文利用第五次人口普查數據和中國老齡科研中心於2000年12月組織的「中國城鄉老年人口狀況一次性抽樣調查」數據，經過加權處理后對山東、以及山東分城鄉的貧困老年人口的比例和數量進行了估計。
  14. Alcohol researchers erik skovenborg and morten groenbaek and two other doctors collected 3. 5 million grocery receipts from 98 stores during the period september 30, 2002, to february 2003. the customers at the grocery stores represented a large sample of the danish population, they said

    從2002年9月30日至2003年2月，酒類研究員艾里克斯科文伯格莫汀格羅恩別克及其他兩位博士從98個商店共收集了350萬張購物小票。
  15. Study limitations were exclusion of bone mineral density from the index, small sample size, and lack of alidation of the scoring system in another population

    研究的不足之處是參數中排除了骨密度參數，樣本數量小並且沒有在其它人群中確認這一評分系統。
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