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1、统计学原理第二次作业及答案题目1总指数的基本形式是（）选择一项：a.个体指数b.平均指数c.综合指数d.平均指标指数正确答案是：综合指数题目2重点调查所选的重点单位，必须是在调查对象中（）选择一项：a.具有较大标志值的那一部分调查单位b.具有代表性的调查单位c.按随机原则选出的调查单位d.填报调查数据的填报单位正确答案是：具有较大标志值的那一部分调查单位题目3连续变量数列、其末组为开口组，下限为1000，其相邻组的组中值为950，则末组的组中值为（）（单选）选择一项：a.1025b.1050c.1100d.1150正确答案是：1050theprimaryanalysisofs
2、oilphysicalandchemicalproperties,suchaspests,disinfection,pestcontrolinadvance.GardenplantgrowthbyrequiredofminimumplantingsoilthicknessshouldmeetXiatable(constructionfigureShangindicateofexcept)vegetationtypeherbflowerlawntowassmallshrubsbigshrubsshallowroottreesdeeproottreessoilthickness3
3、0(CM)30(CM)45(CM)60(CM)90(CM)120(CM)plantingsoilshouldselectionforplantgrowthofselectivesoil,ashumicacidsoil,andlawnfertilizer,andpeatsoil,andpH5.5~7.0,humidity30~70%,completelyloose,Lawnplantingsoilroughness(soilsurfaceshouldbelowerthanteethpond2~5cm).2,plantinggardenoffoundationengineerin
4、gprojectsfromplanningtotheconstructionstage,focusonaftercompletionoflandscaping,theoverallgoalistocreateagoodlivingenvironmentforplants,createagardenandgreenspace.Plantengineeringoftheprojectwastocreatethebasisforplantgrowth,soil,itcanbesaidisthegardenproject,isoneofthemostimportantworks.Al
5、soplantedphaseofthisprojectmustbecarriedoutbythelocalsoilimprovementproject.3,seedlingselectionrequirements:(1)engineeringseedlingselectionofcookedgoods,provisionsrelatingtoplantsize.Plantprocurementspecificationscanbelarge,soastoachieveecologicaleffectinashorttime.Seedlingsshouldhave...Str
6、ong,lush,Crown-shapedfull,normalcolor,rootsystem,pestanddisease-free.(2)theprojectshouldhavegrowthrobust,lush,Crown-shapedfull,normalcolor,rootsystem,pestanddisease-free.Stems,rootcausemechanicaldamage,loopingrootamputationatthewoundtopreventinfection.(3)categorytreeseedlings:aspindleshould
7、haveauniformdistributionofmainbranches,branches,trunkdiameterabove题目4零售物价指数为103%，商品零售量指数为106%，则商品零售额指数为（）（单选）选择一项：a.109%b.110%c.103%d.109.18%正确答案是：109.18%题目5下列不属于强度相对指标的指标有（）选择一项：a.平均单位成本b.人口出生率c.人口死亡率d.人口密度正确答案是：平均单位成本题目6时间序列由两个基本要素构成（）（多选）选择一项或多项：a.时间，
