统计学09-10(1)期末复习题

为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行：andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)第一部分：思考题1导论1.1“统计学”一词有哪几种含义？1.2举例说明什么是总体、个体。1.3参数和统计量的含义？2统计数据的收集2.1简述普查和抽样调查的特点。2.2调查方案包括哪几个方面的内容？2.3间隔尺度与比例尺度有何区别。2.4简要说明数据的来源。2.5统计数据的分类有哪几种？3数据的整理与显示3.1数值型数据的分组方法有哪些？简述组距分组的步骤。3.2直方图与条形图有何区别？3.3设计和使用统计表时的注意因素？4数据分布特征的测度4.1一组数据的分布特征可以从哪几个方面进行测度？4.2简述众数、中位数和均值的特点及应用场合。4.3简述对于具有单峰分布的大多数数据而言，众数、中位数和均值三者的关系？4.4为什么要计算离散系数？5抽样与参数估计5.1什么是抽样误差?影响抽样误差的主要因素有哪些？5.2必要抽样数目受哪些因素影响?5.3评价估计量优劣有哪些标准?5.4解释简单随机抽样、分层抽样、系统抽样和整群抽样的含义。5.5x抽样分布的形式与原有总体的分布和样本量n的大小的关系？6相关与回归分析6.1相关关系有哪些分类？6.2相关系数与判定系数的各自取值范围，区别与联系？6.3一元线性回归模型中有哪些基本假定？6.4判定系数的特点。6.5简述相关系数的性质？7时间序列分析和预测7.1简述移动平均法的特点。7.2时间序列的构成成分如何？8指数8.1总指数的基本编制方法有哪几种?它们各有何特点?8.2什么是指数？指数的种类有哪些？8.3拉氏指数和帕氏指数各有什么特点？第二部分：计算题（参考下面的计算题和教材课后题以及教材后面的练习题）（一）第四章练习题1.某管理局所属的15个企业，2000年按其生产某产品平均单位成本的高低分组资料如下，试计算平均单位成本。按平均单位成本分组（元/件）企业数（个）各组产量在总产量中所占的比重（%）10~1212~1414~18276224038合计151002.计算工人完成生产定额的中位数和众数为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行：andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)2完成生产定额（%）工人数（人）90——1005100——11013110——12016120——13026130——14020140——15015合计953.对10名成年人和10名幼儿的身高（单位：厘米）进行抽样调查，结果如下：（1）要比较分析成年组和幼儿组的身高差异，你会采用什么样的统计量？为什么？（2）比较分析哪一组的身高差异大？成年组167169173178181171172175168176幼儿组686968707173727374754.已知某地区农民家庭按年人均收入分组的资料如下：计算该地区平均每户人均收入的均值及标准差。按人均收入分组（元）家庭户数占总户数比重（%）100以下2.3100~20013.7200~30019.7300~40015.2400~50015.1500~60020.0600以上14.0合计1005.已知甲班数学成绩如下表所示。又知乙班学生平均成绩为78分，标准差为11。试比较哪个班平均成绩的代表性大。学习成绩(分)人数60以下60—7070—8080—9090—10041025156合计60为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行：andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingof