资源描述：
《兰大《统计学原理》春在线作业（lan da principles of statistics spring online homework ）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、兰大《统计学原理》13春在线作业3（LanDaprinciplesofStatistics13springonlinehomework3）14spring13autumnbigorchid"statisticsprinciple"13springonlinehomework3Totalscore:100testtime:-RadioexaminationAmultiple-choicequestionJudgmentquestionRadioexaminationquestions(10questions,40points)1.,tounderstandt
2、hestatusofworkersinindustrialenterprisesinacertainarea,andthestatisticsareasfollowsA.allindustrialenterprisesintheregionB.eachindustrialenterpriseC.allthestaffofallindustrialenterprisesintheregionD.allemployeesofeachindustrialenterpriseFullmarks:42.,anumberofstudentsinaclassscoreo
3、f67points,78points,88points,89points,96points,"studentachievement"is()A.qualitysignsB.quantitysignC.flagvalueD.quantitativeindexFullmarks:43.,some10weightliftingathletesweight:101pounds,102pounds,103pounds,108pounds,102pounds,105pounds,102pounds,110pounds,105pounds,102pounds,accor
4、dingtotheaveragenumberofcalculations,theresultsmeet()A.arithmeticmean=median=numberB.mode>>medianarithmeticaverageC.>>medianarithmeticaveragemodeD.arithmeticmeanmedianmode>>Fullmarks:4The4.modeisthesymbolofwhichoneofthefollowingvalues(general)A.iscenteredB.numericalmaximumC.appear
5、smorefrequentlyD.appearsmostoftenFullmarks:45.,thereisastudentwhoseexaminationscoreis70points.Inthestatisticalgroup,thisvariablevalueshouldbeincludedA.,60---70,dividethisgroupB.,70---80,dividethisgroupC.60-70or70-80-twocanbeD.astheupperlimitofthegroupFullmarks:46.,theindexofvariat
6、ionindexisthereflectionofhomogeneouspopulationConcentrationofA.B.ionizationdegreeC.averageD.changedegreeFullmarks:47.thekeytostatisticalgroupingis()A.correctlyselectsgroupflagsB.correctlydeterminegrouppitchC.determinesthenumberofgroupscorrectlyD.correctlydeterminesthemedianvalueof
7、agroupFullmarks:homeworkanswerdidnotupload,firstforeveryonetoreviewtheuse,ifyouneedtoanswerthespecificseemyregistrationnametofind4points8.cumulativegrowthandgrowthrateoveraperiodoftimeinthefollowinglinksA.cumulativegrowth=ringgrowthrate*prelevelB.cumulativegrowth=fixedbasegrowthra
8、te*prelevelC.cumulativegrowth=Cen
