当前位置:考试网  > 试卷库  > 学历类  > 自考  > 自考专业(人力资源管理)  > 公共关系学  > 配额抽样是指什么?
试题预览

配额抽样是指什么?

查看答案
收藏
纠错
正确答案:

配额抽样是先确定调查对象人口总体的各项特征,根据“抽样框”,按人口总体中具有各项规定特征的人口比例.确定样本中具有各种特征的人数比例。访问者认真遵守规定的特征比例抽选调查对象,作为调查的样本。

答案解析:

暂无解析

你可能感兴趣的试题

公关观念包括()

公共关系沟通中主观随意性最突出的一种沟通形式是

当组织与环境发生某种冲突时,为了摆脱被动局面,应采取的公关活动方式是

试述组织形象的构成。

公共关系对公关人员能力的最基本要求是()

热门试题 更多>
试题分类: MySQL数据库程序设计
练习次数:0次
试题分类: Python语言程序设计
练习次数:0次
试题分类: 软件测试技术
练习次数:0次
试题分类: 水电
练习次数:0次
试题分类: 水利
练习次数:0次
试题分类: 软件测试技术
练习次数:0次
Thefoodweeatseemstohaveprofoundeffectsonourhealth.Althoughsciencehasmadeenormousstepsinmakingfoodmorefittoeat,ithas,atthesametime,mademanyfoodsunfittoeat.Someresearchhasshownthatperhapseightypercentofcancerisrelatedtothedietaswell,especiallycancerthecolon.Differentculturesaremorepronetocontractcertainillnessesbecauseofthefoodthatischaracteristicinthesecultures.Thatfoodrelatedtollnessisnotanewdiscovery.In1945,governmentresearchersrealizedthatitratesandnitrites,commonlyusedtopreservecolorinmeats,andotherfooddditives,causedcancer.Yet,thesecarcinogenicadditivesremaininourfood,nditbecomesmoredifficultallthetimetoknowwhichthingsonthepackginglabelsofprocessedfoodarehelpfulorharmful.Theadditiveswhichweeatarenotallsodirect.Farmersoftengivepenicillintobeefandpoultry,andbecauseofthis,penicillinhasbeenfoundinthemilkoftreatedcows.Sometimessimilardrugsareadministeredtoanimalsnotformedicinalpurposes,butforfinancialreasons.Thefarmersaresimplytryingtofattentheanimalsinordertoobtainahigherpriceonthemarket.AlthoughtheFoodandDrugAdministration(FDA)hastriedrepeatedlytocontroltheseprocedures,thepracticescontinue. 48.Whatisthemaintopicofthepassage? A.Foodandourhealth BFoodandadditives C.Foodandcancer DFoodandculture 49AllofthefollowingstatementsaretrueEXCEPT_______. AFortypercentofcanceriscausedbyproblemsrelatedtofood. BResearchershaveknownaboutthepotentialdangeroffoodadditivesformanyyears C.Weeatsomeofthefoodadditivesdirectlyandsomeindirectly DDrugsarealwaysgiventoanimalsformedicinalpurposes 50.Whydofarmersgivedrugstotheiranimals? A.tospeedupthegrowthofanimals BTomaketheanimalsfatter Ctomaketheanimals’meatfittoeat DTomaketheanimals’meatrichinnutrients 51.Itcanbeinferredfromthepassagethat_________. Ascientisthavemadeallthefoodfittoeat Bonlyinrecentyearshavepeoplefoundthatthefoodisrelatedtoone’sillness Callkindsofcancerarerelatedtothediet Dsomeadditivesareharmfultoourhealth 52.Theword“this”inthesecondsentenceofparagraph2mostprobablyrefersto__________. Afarmer Bpenicillin Cbeefandpoultry Dthefactthatfarmersoftengivepenicillintoabeef
试题分类: 英语B级
练习次数:0次
试题分类: 网络管理员
练习次数:0次
扫一扫,手机做题