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ID:49023070
大小:116.00 KB
页数:8页
时间:2020-01-29
《population and sample.ppt》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、PopulationandSample(研究对象总体与样本)魏晓捷Contents1.DefinitionsofPopulationandSample2.RelationshipBetweenPopulationandSampleDefinitionsofPopulationandSamplePopulation:Acollection(总体)ofsubjectsoreventsthatshareacommoncharacteristic.Itcanbeacollectionofpersons,te
2、xtbooks,ortestpapers.Asample:Arepresentativeportionofthewholetargetpopulation.PopulationandSampleRandomselecting:Aprocedureofselectingasamplewherebyeachmemberofthepopulationhasanequalchanceofbeingchosenintothesample.RelationshipbetweenPopulationandSamp
3、leRelationshipBetweenPopulationandSamplePopulationistheareainwhichyouaretryingtogetinformationfrom.Sampleisasectionofyourpopulationthatyouareactuallygoingtosurvey.Itisimportanttohaveasamplethatwillrepresentyourentirepopulationinordertominimizebiases.Th
4、ankyou
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