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ID:36072564
大小:1.25 MB
页数:95页
时间:2019-05-04
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1、Topic3:Introductiontoregression回归分析3.2Response(dependent)andexplanatory(independent)variables反应变量和解释变量序号音标英文中文出处1[rɪˈgreʃn]regression(统计学)回归;衰退;P1102[rɪˈspɒns]response反应;回答,答复;P1103[dɪˈpendənt]dependent依靠的;依赖的;取决于…的P1104[ɪkˈsplænətri]explanatory解释的;说明的;解释性;P1105[ˌɪndɪˈpendənt]independent自
2、主的;不相关连的P1106[əˈprəʊpriət]appropriate适当的;恰当的;合适的;P1107[aɪˈdentɪfaɪ]identify识别,认出;确定8[ˈhændikæp]handicap障碍;缺陷;给弱者增加的杆数P111T2序号音标英文中文出处9[ɪnˈtenʃn]intention意图,目的;意向P111T310[kənˈsʌmpʃn]consumption消费;耗尽;[医学]消耗性疾病;P111T411[ˈstɪmjələs]stimulus刺激物;刺激因素;激法物;P111T512[ˌpi:diəˈtrɪʃn]paediatrician儿科医师
3、;P111T6重点内容:两个名称的理解Ifthevaluesofonevariable‘respond’tothevaluesofanothervariable,thentheformervariableisreferredtoastheresponse(dependent)variable(反应变量)(是一个表现)Soanexplanatory(independent)variableisafactorthatinfluencestheresponse(dependent)variable.(解释变量)是一个主因,影响其他变量的源头。例子来说明:Inthecasewhe
4、retheagesofcompanyemployees(公司员工年龄)arecomparedwiththeirannualsalaries(年薪),youmightreasonablyexpectthattheannualsalaryofanemployeewoulddependontheperson’sage.Age和salaryAge影响了salaryAge是explanatoryvariableSalary是responsevariable方法:(1)先找到其中的两个变量(2)然后判断谁影响了谁(3)主因就是解释变量Inthiscase,theageoftheemp
5、loyeeistheexplanatoryvariableandthesalaryoftheemployeeistheresponsevariable.另一个例子Considerthecasewhereastudycomparedtheheightsofcompanyemployeesagainsttheirannualsalaries.(身高和年薪)Commonsensewouldsuggestthattheheightofacompanyemployeewouldnotrespondtotheperson’sannualsalarynorwouldtheannuals
6、alaryofacompanyemployeerespondtotheperson’sheight.(两者互不影响)Inthiscase,itisnotappropriatetodesignate(指明)onevariableasexplanatoryandoneasresponse.一种表示的方法Theexplanatoryvariableisafactorthatinfluencestheresponsevariable.Whendisplayingdataonagraphplacetheexplanatoryvariableonthehorizontalaxis(横
7、轴解释变量)andtheresponsevariableontheverticalaxis.(纵轴反应变量)ExampleForeachofthefollowingpairsofvariables,identifytheexplanatory(independent)variableandtheresponse(dependent)variable.Ifitisnotpossibletoidentifythis,thenwrite‘notappropriate’.aThenumberofvisitorsatalocalswim
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