分类：教育/科学-外语学习
问题：请翻译成通顺的汉语。谢谢。Primarydataisdataco 
Primary data is data collect through observation, survey or controlled experiment for the first time during a marketing research study. Marketers rely on primary data when up-to-date, specifically targeted information is essential; when they have sufficient time to conduct thePrimary data is data collect through observation, survey or controlled experiment for the first time during a marketing research study. Marketers rely on primary data when up-to-date, specifically targeted information is essential; when they have sufficient time to conduct the analysis; and when the good or service plays a major role in the company's total marketing strategy to warrant the expense of data collection.Secondary data refers to previously collected data from internal and external sources. Internal data include sales records, product performance, sales force activities and marketing costs. External data are obtained from local, provincial (state) and federal governments and private sources. The reasons for using secondary data include the relative low cost, the easy availability and the limited time taken by searching for it.
回答：原始数据是在营销调查研究中通过观察、调查和控制实验初次得到的数据。当营销者有足够的时间进行分析，当商品或服务在该公司的总营销策略发挥了重要作用足以保证数据收集的开支时，当需要最新的、目的性很强的数据时他们就会依靠原始数据。
    二级数据指的是以前收集的内部和外部的资料中提取的数据。内部数据包括销售记录、产品性能、销售队伍和营销费用。外部数据主要来自地方、省(州)政府和联邦政府和私人的资料。利用二级数据的原因包括利用二手资料成本相对低、容易获得、获取数据的时间较短。