統(tǒng)計(jì)學(xué)試卷B-英文版

PAGE4PAGE1財(cái)經(jīng)大學(xué)試卷試卷代碼：06003B課程學(xué)時(shí)：48課程名稱：統(tǒng)計(jì)學(xué)適用對(duì)象：Ⅰ、SINGLECHOICE(1′×5＝5′)1.Whichofthefollowingisqualityindex?(

)

A.Grosscostofliving

indexB.indexofstaffpopulationC.indexofconsumerlevelofeachperson

D.

quantitysoldindex

2.Whatrelationcanweillustratefromthesituationthatanapproximateconstantchangeinyisassociateswithaquantitativechangeinx.()A.PositivelinearcorrelationB.NegativelinearcorrelationC.

LinearcorrelationD.

Curvilinearcorrelation3.Dividingthesurveyobjectsintosomegroups,thensamplingrandomlyfromeachgroup,wecalledthismethod.()A.

equidistantsampling

B.

clustersampling

C.

stratifiedsampling

D.

purerandomsampling4.Whatistheyear′saverageincreasingratewhentheincreasingratesofrecentthreeyearswere7%、9%、11%?()A.

9%

B.

8.8493%

C.

8.9878%

D.

10%

5.Whichofthefollowingisstandarderroroftheproportionifthequalifiedrateoftheproductsis90%?()A.

10%

B.

90%

C.

9%

D.

30%

Ⅱ、JUDGE(Write“T”fortrueand“F”forfalse.1′×5＝5′)1.Rangeisequaltowidthoftheclassesmultiplythenumberofclassesatanystatisticalclassification.()2.Marginoferrorisgenerallylargerthanthestandarderrorofthesamplingstatistics.()3.TheformulaofPaascheindexweightforeachitemisitsbase-periodquantity.()4.CorrelativecoefficientiszeroimpliesthatthereisnoCorrelationrelationshipbetweenvariables.()5.Whetheritisanalysisofcorrelationoranalysisofregression,wemustdetermineindependentvariableanddependentvariable.()Ⅲ、SIMPLEANSWER（5′×2=10′）1、Brieflydescribetherelationshipamongcoefficientofcorrelation、coefficientofregressionandcoefficientofdiscrimination,andexpressituseformula.2、BrieflydescribethecharacteristicsofLaspeyersindexandPaascheindex.Ⅳ、CALCULATION（Total:60′）Arandomsampleofsize440acresisselectedfromavillage’srice,theresultoftestisthatthemeanproductionis450Kgandsamplestandarddeviationis80kg.Requirementsare:①Calculatethesamplingstandarderrorofthemeanproduction②Estimatethemeanproductionofwholevillage′sriceata95.45%probability.③Ifweselectthesamplefromanothervillage,howlargeasampleshouldbeselectedtoprovidetheconfidenceindicates=2withamarginoferrornotexceeding10kg,assumethatthestandarderrorofperacreis80kg?（25′）2、Thedataofcars′productionofanautomobilemanufacturerinrecentyearsaregivenasfollows:Year200020012002200320042005Quantity100020004000500070009000Pleaseworkouttheparametersaandbaccordingtothesedata,writeoutthetrendequationbyusingtheleastsquaresmethod,andexplaintheeconomicmeaningofb.（15′）3、Thedataofthequantityandpriceinamanufactureraregivenasfollows:products′NamequantitypriceQ0Q1P0P1Ⅰ（tai）Ⅱ（ton）Ⅲ（piece）20050015025055018050010002006001100210Pleasetrytoanalyzethechangeinthegrossvalueofoutputfromtwoaspectsrelativenumberandabsolutenumberbyfactoranalysis.（20′）ⅴ、CASEPROBLEM(20′)Doesageaffectunemployment?EachmonththeU.S.BureauofLaborStatisticspublishesavarietyofunemploymentstatistic,includingthenumberofindividualswhoareunemployedandthemeanlengthoftimetheindividualshavebeenunemployed.ForNovember2005,theBureauofLaborStatisticsreportedthatthenationalmeanlengthoftimeofunemploymentwas14.6weeks.TheMayorofNewYorkhasrequestedastudyonthestatusofunemploymentinNewYorkarea.Asampleof50unemployedresidentsofNewYorkincludeddataontheageandthenumberofweekswithoutajob.AportionofthedatacollectedinNovember2005isshownasfollows:age(years)Weeksofunemployment(week)age(years)Weeksofunemployment(week)2525252626282832334040404546474851217410151215151418201825284848494949505050525354555556575813242525302535364040424545435052Questionsare：ⅰ.Describethepopulation′scharacteristicsoftheunemployedinNewYorkindescriptivestatisticaldata.ⅱ.Developa95%confidenceintervalestimateofthemeanageofunemployedindividualsinNewYork.ⅲ.ConductahypothesistesttodeterminethemeandurationofunemploymentinNewYorkis