primary data是主要数据，secondary data是次要数据。用Primary data举例子：separate the primary data and indices to that data.他们的解决方案是把主要数据和这些数据的索引分离开来。The Node object is the primary data type for the entire DOM.节点对象是整个DOM中最主要的数据类型。用Secondary da...
1、Industry documents were analysed alongside primary and secondary data on the tobacco industry in South Korea.对韩国的烟草业文件进行了分析，同时，对关于烟草业的主要数据和次级数据进行了分析。2、Secondary data refers to previously collected data from internal and external sources.中级的数据...
Primary and Secondary data-主要和次要数据 【知识点】 Primary and Secondary data-主要和次要数据 Primary and Secondary data-主要和次要数据 Primary dataare data collected especially/particularly for a specific purpose. Secondary dataare data which have already been collected elsewhere, for some other purp...
Eveniftwostudiesusethesamemeasurementunit,thetermsofdefinitionwereoftendifferent.Inmostcases,usingsecondarydataiscostsaving,thiscannotalwaysapply.Forexample,usingsecondarydatacompiledbyacommercialorganizationmightbequiteexpensive.Itistheresponsibilityoftheresearcherthatdataareaccurate;inaccuraciescannotbeblamedonthesecondary...
Regional health planningNeeds-based careSecondary data analysisDementiaHealth service planning that takes into account as far as possible the regional needs and regional discrepancies is a controversial health issue in Germany.Ulrich, Lisa-R.Univ CologneSchatz, Tanja R....
一手数据（Primary data）：也称原始数据。指通过人员访谈、询问、问卷、测定等方式直截获得的，时效性和相关性更好。二手数据（Secondary data）：利用文献，统计年报以及数据库等前人统计好的数据资料。优点是获取成本低，且现成可用。一般可以长时间保存，生成数据趋势图方便。一手数据提能够提供量身定制的...
Primary vs. secondary data Data: Data is information collected to be used for research or reference purposes. Usually, pieces of data are gathered to support some type of hypothesis. Depending on the nature of the research, data can take many forms and presented in a variety of ways, such ...
Step by step video solution for Introduction|| Collection OF Data||Primary and Secondary Data|| classes|| Class interval|| Class size ( range )|| Presentation OF Group data & Single data ( ungrouped data )||Tally mark||Frequency distribution table by Maths experts to help you in doubts &...
Secondary data should be examined to make sure it is up to date because secondary data may not be current and may not relate to the present period in which it is been used. Data should be detailed i.e. definition of terms, method of data collection and all other relevant info...
Free Essays from Studymode | 1. PRIMARY ANDSECONDARY DATA We explore the availability and use of data (primary and secondary) in the field of business...