商务统计学-2015期中考试卷

《商务统计》期中考试试题Part I: 单选题 (每题2分，共60分)The universe or "totality of items or things" under consideration

商务统计学期中考试卷 2015 《商务统计》期中考试试题 PartI:(260) 单选题每题分，共分 1. Theuniverseor"totalityofitemsorthings"underconsiderationiscalled a) asample. b) apopulation. c) aparameter. d) astatistic. 2. Whichofthefollowingismostlikelyapopulationasopposedtoasample? a) respondentstoanewspapersurvey. b) thefirst5studentscompletinganassignment. c) everythirdpersontoarriveatthebank. d) registeredvotersinacounty. 3. AstudyisunderwayinYosemiteNationalForesttodeterminetheadultheightofAmerican pinetrees.Specifically,thestudyisattemptingtodeterminewhatfactorsaidatreein reachingheightsgreaterthan60feettall.Itisestimatedthattheforestcontains25,000adult Americanpines.Thestudyinvolvescollectingheightsfrom250randomlyselectedadult Americanpinetreesandanalyzingtheresults.Identifythevariableofinterestinthestudy. a) TheageofanAmericanpinetreeinYosemiteNationalForest. b) TheheightofanAmericanpinetreeinYosemiteNationalForest. c) ThenumberofAmericanpinetreesinYosemiteNationalForest. d) ThespeciesoftreesinYosemiteNationalForest. 4. TheBritishAirwaysInternetsiteprovidesaquestionnaireinstrumentthatcanbeanswered electronically.Whichofthe4methodsofdatacollectionisinvolvedwhenpeoplecomplete thequestionnaire? a) Publishedsources b) Experimentation c) Surveying d) Observation 5. Tomonitorcampussecurity,thecampuspoliceofficeistakingasurveyofthenumberof studentsinaparkingloteach30minutesofa24-hourperiodwiththegoalofdetermining X whenpatrolsofthelotwouldservethemoststudents.Ifisthenumberofstudentsinthe X loteachperiodoftime,thenisanexampleof a) acategoricalrandomvariable. b) adiscreterandomvariable. c) acontinuousrandomvariable. d) astatistic. 6. Aninsurancecompanyevaluatesmanynumericalvariablesaboutapersonbeforedeciding onanappropriaterateforautomobileinsurance.Arepresentativefromalocalinsurance X, agencyselectedarandomsampleofinsureddriversandrecorded,thenumberofclaims eachmadeinthelast3years,withthefollowingresults. Xfrequency 114 218