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1、统计学课程设计（CoursedesignofStatistics）CoursedesignofStatisticsClassChinaWorldTradeCenter091Number209090407ThenameofZhangWenjunDecember2011www.docin.com1/19Thefirstpartisthechartpresentationofthedata1.01randomandqualityevaluationofhouseholdelectricalapplianceserviceindustrycus
2、tomerservicefromasamplecomposedof100families.ServicequalityThelevelofA.B.expressedasC.betterD.E.poorrespectively.Thesurveyresultsareshowninthefollowingtable.Requirements1.Pointedoutthattheabovedatabelongstowhattypeof2.Excelmakinguseofafrequencydistributiontable3.Drawabar
3、chartandreflectthedistributionofrating.BE,C,C,A,B,D,A,C,ED,A,C,B,C,C,D,E,E,EA,D,B,C,C,D,A,C,B,EB,A,C,D,E,D,A,D,C,BC,B,C,E,D,C,B,B,C,CD,A,C,B,C,C,D,E,B,EB,E,C,C,A,B,D,A,E,CB,A,C,D,E,D,A,D,C,BA,D,B,C,C,D,A,C,B,EC,B,C,E,D,C,B,B,C,CThesolution1.Sequencedata2.Qualityofservice
4、gradefrequencydistributiontablequalityofservicegradeFrequencyfrequency%A1414,B2121C3232D1818E1515(3)bargraphZeroTwentyFortySixtyEightyOnehundredOnehundredandtwenty12345totalLevelfrequency0%20%40%60%80%100%120%frequencyWww.docin.com2/19Productsalesrevenuedatamillionunits.
5、1.02anindustrymanagementbureaubelongsto40enterprisesin2002seetable3.02.Requirements1)theappropriategroupandpreparationandfrequencydistributiontableandcalculatesthecumulativefrequencyandcumulativefrequencyaccordingtotheabovedata2)ifrequiredsalesincomeofmorethan$1million25
6、0thousandforthe115advancedenterprises1million250thousandyuanforthegoodenterprise1051million150thousandyuanfor1million50thousandyuanforgeneralenterprisesandbackwardenterprisesandadvancedenterprises,accordingtothegoodenterpriseandgeneralenterpriseandfallTheenterpriseisgrou
7、ped.Onehundredandfifty-two1031051361051031231461171371161279713811513512492110117119118115113108120100104881128712512995107108114142119126Solution(1)GroupedbysalesMillionyuan.NumberofenterprisesA.frequency%.CumulativedownwardaccumulationEnterprisefrequencyenterprisefrequ
8、ency100below100110110120120130130140Morethan140FiveNineTwelveSevenFourThreeTwelvepointfiveTwenty-twopoi
