STRAIGHTERLINE BUSINESS STATS
FINAL EXAM WITH VERIFIED
SOLUTIONS
The tmain tpurpose tof tdescriptive tstatistics tis tto t- tcorrect tanswers t-Summarize tdata
tin ta tuseful tand tinformative tmanner
Which tword tis tNOT tpart tof tthe tdefinition tof tdescriptive tstatistics? t- tcorrect tanswers
t-Predicting
A tmarketing tclass tof t50 tstudents tevaluated tthe tinstructor tusing tthe tfollowing tscale:
tsuperior, tgood, taverage, tpoor, tand tinferior. tThe tdescriptive tsummary tshowed tthe
tfollowing tsurvey tresults: t2% tsuperior, t8% tgood, t45% taverage, t45% tpoor, tand t0%
tinferior. t- tcorrect tanswers t-c. tMost tstudents trated tthe tinstructor tas tpoor tor taverage.
What ttype tof tvariable tis tthe tnumber tof trobberies treported tin tyour tcity? t- tcorrect
tanswers t-Quantitative
,The tNielsen tRatings tbreak tdown tthe tnumber tof tpeople twatching ta tparticular
ttelevision tshow tby tage. tWhat tlevel tof tmeasurement tis tage? t- tcorrect tanswers t-
Ratio
What tlevel tof tmeasurement tis ta tperson's t"favorite tsport"? t- tcorrect tanswers t-
Nominal
The tfinal trankings tof tthe ttop t20 tNCAA tcollege tbasketball tteams tare tan texample tof
twhich tlevel tof tmeasurement? t- tcorrect tanswers t-Ordinal
What tlevel tof tmeasurement tis tthe tCentigrade ttemperature tscale? t- tcorrect tanswers
t-Interval
A tsurvey tincludes ta tquestion tregarding tmarital tstatus tthat thas tthe tfollowing
tresponses: tsingle, tmarried, tdivorced, tseparated, tor twidowed. tWhat tis tthe tscale tof
tmeasurement tfor tthis tquestion? t- tcorrect tanswers t-Nominal
A tgroup tof twomen ttried tfive tbrands tof tfingernail tpolish tand tranked tthem taccording
tto tpreference. tWhat tlevel tof tmeasurement tis tthis? t- tcorrect tanswers t-Ordinal
Shoe tstyle tis tan texample tof twhat tlevel tof tmeasurement? t- tcorrect tanswers t-
Nominal
When tTV tadvertisements treport t"2 tout tof t3 tdentists tsurveyed tindicated tthey twould
trecommend tBrand tX ttoothpaste tto ttheir tpatients," tan tinformed tconsumer tmay
tquestion tthe tconclusion tbecause tthe: t- tcorrect tanswers t-Advertisement tdoes tnot
tinclude tthe ttotal tnumber tof tdentists tsurveyed
A tsample tof tthe tparamedical tfees tcharged tby tclinics trevealed tthese tamounts: t$55,
t$49, t$50, t$45, t$52, tand t$55. tWhat tis tthe tmedian tcharge? t- tcorrect tanswers t-51.00
For ta tdata tset twith tan todd tnumber tof tobservations tthat thave tbeen tsorted tfrom
tsmallest tto tlargest tvalues, twhere tis tthe tmedian tlocated? t- tcorrect tanswers t-(n t+
t1)/2
Assume ta tstudent treceived tthe tfollowing tgrades tfor tthe tsemester: tHistory, tB;
tStatistics, tA; tSpanish, tC; tand tEnglish, tC. tHistory tand tEnglish tare t5 tcredit-hour
tcourses, tStatistics ta t4 tcredit-hour tcourse, tand tSpanish ta t3 tcredit-hour tcourse. tIf t4
tgrade tpoints tare tassigned tfor tan tA, t3 tfor ta tB, tand t2 tfor ta tC, twhat tis tthe tweighted
tmean tgrade tfor tthe tsemester? t- tcorrect tanswers t-2.76
A tdisadvantage tof tusing tan tarithmetic tmean tto tsummarize ta tset tof tdata tis tthat
t__________. t- tcorrect tanswers t-It tcan tbe tbiased tby tone tor ttwo textremely tsmall tor
tlarge tvalues
, A tsurvey titem tasked tstudents tto tindicate ttheir tclass tin tcollege: tfreshman,
tsophomore, tjunior, tor tsenior. tWhich tmeasure(s) tof tcentral tlocation twould tbe
tappropriate tfor tthe tdata tgenerated tby tthat tquestionnaire titem? t- tcorrect tanswers t-
Mode tand tmedian
The ttimes t(in tminutes) tthat tseveral tunderwriters ttook tto treview tapplications tfor
tsimilar tinsurance tcoverage tare t50, t230, t52, tand t57. tWhat tis tthe tmedian tlength tof
ttime trequired tto treview tan tapplication? t- tcorrect tanswers t-54.5
For tthe tmost trecent tseven tyears, tthe tU.S. tDepartment tof tEducation treported tthe
tfollowing tnumber tof tbachelor's tdegrees tawarded tin tcomputer tscience: t4,033; t5,652;
t6,407; t7,201; t8,719; t11,154; t15,121. tWhat tis tthe tannual tarithmetic tmean tnumber tof
tdegrees tawarded? t- tcorrect tanswers t-About t8,327
Which tof tthe tfollowing tmeasures tof tdispersion tare tbased ton tdeviations tfrom tthe
tmean? t- tcorrect tanswers t-All tapply
From tthe teasiest tto tthe thardest t"ease tof tinterpretation," trank tthe tmeasures tof
tdispersion. t- tcorrect tanswers t-Range, tmean tdeviation, tvariance
The tweights tof ta tsample tof tcrates tready tfor tshipment tto tMoscow, tRussia tare t(in
tkilograms): t103, t97, t101, t106, tand t103. tWhat tis tthe tmean tdeviation? t- tcorrect
tanswers t-2.4 tkg
A tsample tof tassistant tprofessors ton tthe tbusiness tfaculty tat tstate-supported
tinstitutions tin tOhio trevealed tthe tmean tincome tto tbe t$72,000 tfor tnine tmonths, twith
ta tstandard tdeviation tof t$3,000. tUsing tChebyshev's tTheorem, twhat tproportion tof tthe
tfaculty tearns tmore tthan t$66,000, tbut tless tthan t$78,000? t- tcorrect tanswers t-At tleast
t75%
Based ton tthe tEmpirical tRule, twhat tpercent tof tthe tobservations twill tlie tbetween tplus
tor tminus ttwo tstandard tdeviations tfrom tthe tmean? t- tcorrect tanswers t-95%
What tis tthe trelationship tbetween tthe tvariance tand tthe tstandard tdeviation? t- tcorrect
tanswers t-Variance tis tthe tsquare tof tthe tstandard tdeviation.
What tstatistics tare tneeded tto tdraw ta tbox tplot? t- tcorrect tanswers t-The tminimum,
tmaximum, tmedian, tfirst tand tthird tquartiles
A tbox tplot tshows t___________. t- tcorrect tanswers t-The trelative tsymmetry tof ta
tdistribution tfor ta tset tof tdata
A tdot tplot tcan tbe tused tto tshow t_________________. t- tcorrect tanswers t-The
tdistribution tfor ta tquantitative tvariable
FINAL EXAM WITH VERIFIED
SOLUTIONS
The tmain tpurpose tof tdescriptive tstatistics tis tto t- tcorrect tanswers t-Summarize tdata
tin ta tuseful tand tinformative tmanner
Which tword tis tNOT tpart tof tthe tdefinition tof tdescriptive tstatistics? t- tcorrect tanswers
t-Predicting
A tmarketing tclass tof t50 tstudents tevaluated tthe tinstructor tusing tthe tfollowing tscale:
tsuperior, tgood, taverage, tpoor, tand tinferior. tThe tdescriptive tsummary tshowed tthe
tfollowing tsurvey tresults: t2% tsuperior, t8% tgood, t45% taverage, t45% tpoor, tand t0%
tinferior. t- tcorrect tanswers t-c. tMost tstudents trated tthe tinstructor tas tpoor tor taverage.
What ttype tof tvariable tis tthe tnumber tof trobberies treported tin tyour tcity? t- tcorrect
tanswers t-Quantitative
,The tNielsen tRatings tbreak tdown tthe tnumber tof tpeople twatching ta tparticular
ttelevision tshow tby tage. tWhat tlevel tof tmeasurement tis tage? t- tcorrect tanswers t-
Ratio
What tlevel tof tmeasurement tis ta tperson's t"favorite tsport"? t- tcorrect tanswers t-
Nominal
The tfinal trankings tof tthe ttop t20 tNCAA tcollege tbasketball tteams tare tan texample tof
twhich tlevel tof tmeasurement? t- tcorrect tanswers t-Ordinal
What tlevel tof tmeasurement tis tthe tCentigrade ttemperature tscale? t- tcorrect tanswers
t-Interval
A tsurvey tincludes ta tquestion tregarding tmarital tstatus tthat thas tthe tfollowing
tresponses: tsingle, tmarried, tdivorced, tseparated, tor twidowed. tWhat tis tthe tscale tof
tmeasurement tfor tthis tquestion? t- tcorrect tanswers t-Nominal
A tgroup tof twomen ttried tfive tbrands tof tfingernail tpolish tand tranked tthem taccording
tto tpreference. tWhat tlevel tof tmeasurement tis tthis? t- tcorrect tanswers t-Ordinal
Shoe tstyle tis tan texample tof twhat tlevel tof tmeasurement? t- tcorrect tanswers t-
Nominal
When tTV tadvertisements treport t"2 tout tof t3 tdentists tsurveyed tindicated tthey twould
trecommend tBrand tX ttoothpaste tto ttheir tpatients," tan tinformed tconsumer tmay
tquestion tthe tconclusion tbecause tthe: t- tcorrect tanswers t-Advertisement tdoes tnot
tinclude tthe ttotal tnumber tof tdentists tsurveyed
A tsample tof tthe tparamedical tfees tcharged tby tclinics trevealed tthese tamounts: t$55,
t$49, t$50, t$45, t$52, tand t$55. tWhat tis tthe tmedian tcharge? t- tcorrect tanswers t-51.00
For ta tdata tset twith tan todd tnumber tof tobservations tthat thave tbeen tsorted tfrom
tsmallest tto tlargest tvalues, twhere tis tthe tmedian tlocated? t- tcorrect tanswers t-(n t+
t1)/2
Assume ta tstudent treceived tthe tfollowing tgrades tfor tthe tsemester: tHistory, tB;
tStatistics, tA; tSpanish, tC; tand tEnglish, tC. tHistory tand tEnglish tare t5 tcredit-hour
tcourses, tStatistics ta t4 tcredit-hour tcourse, tand tSpanish ta t3 tcredit-hour tcourse. tIf t4
tgrade tpoints tare tassigned tfor tan tA, t3 tfor ta tB, tand t2 tfor ta tC, twhat tis tthe tweighted
tmean tgrade tfor tthe tsemester? t- tcorrect tanswers t-2.76
A tdisadvantage tof tusing tan tarithmetic tmean tto tsummarize ta tset tof tdata tis tthat
t__________. t- tcorrect tanswers t-It tcan tbe tbiased tby tone tor ttwo textremely tsmall tor
tlarge tvalues
, A tsurvey titem tasked tstudents tto tindicate ttheir tclass tin tcollege: tfreshman,
tsophomore, tjunior, tor tsenior. tWhich tmeasure(s) tof tcentral tlocation twould tbe
tappropriate tfor tthe tdata tgenerated tby tthat tquestionnaire titem? t- tcorrect tanswers t-
Mode tand tmedian
The ttimes t(in tminutes) tthat tseveral tunderwriters ttook tto treview tapplications tfor
tsimilar tinsurance tcoverage tare t50, t230, t52, tand t57. tWhat tis tthe tmedian tlength tof
ttime trequired tto treview tan tapplication? t- tcorrect tanswers t-54.5
For tthe tmost trecent tseven tyears, tthe tU.S. tDepartment tof tEducation treported tthe
tfollowing tnumber tof tbachelor's tdegrees tawarded tin tcomputer tscience: t4,033; t5,652;
t6,407; t7,201; t8,719; t11,154; t15,121. tWhat tis tthe tannual tarithmetic tmean tnumber tof
tdegrees tawarded? t- tcorrect tanswers t-About t8,327
Which tof tthe tfollowing tmeasures tof tdispersion tare tbased ton tdeviations tfrom tthe
tmean? t- tcorrect tanswers t-All tapply
From tthe teasiest tto tthe thardest t"ease tof tinterpretation," trank tthe tmeasures tof
tdispersion. t- tcorrect tanswers t-Range, tmean tdeviation, tvariance
The tweights tof ta tsample tof tcrates tready tfor tshipment tto tMoscow, tRussia tare t(in
tkilograms): t103, t97, t101, t106, tand t103. tWhat tis tthe tmean tdeviation? t- tcorrect
tanswers t-2.4 tkg
A tsample tof tassistant tprofessors ton tthe tbusiness tfaculty tat tstate-supported
tinstitutions tin tOhio trevealed tthe tmean tincome tto tbe t$72,000 tfor tnine tmonths, twith
ta tstandard tdeviation tof t$3,000. tUsing tChebyshev's tTheorem, twhat tproportion tof tthe
tfaculty tearns tmore tthan t$66,000, tbut tless tthan t$78,000? t- tcorrect tanswers t-At tleast
t75%
Based ton tthe tEmpirical tRule, twhat tpercent tof tthe tobservations twill tlie tbetween tplus
tor tminus ttwo tstandard tdeviations tfrom tthe tmean? t- tcorrect tanswers t-95%
What tis tthe trelationship tbetween tthe tvariance tand tthe tstandard tdeviation? t- tcorrect
tanswers t-Variance tis tthe tsquare tof tthe tstandard tdeviation.
What tstatistics tare tneeded tto tdraw ta tbox tplot? t- tcorrect tanswers t-The tminimum,
tmaximum, tmedian, tfirst tand tthird tquartiles
A tbox tplot tshows t___________. t- tcorrect tanswers t-The trelative tsymmetry tof ta
tdistribution tfor ta tset tof tdata
A tdot tplot tcan tbe tused tto tshow t_________________. t- tcorrect tanswers t-The
tdistribution tfor ta tquantitative tvariable
