STRAIGHTERLINE BUSINESS STATS
FINAL EXAM GRADED A+
The wmain wpurpose wof wdescriptive wstatistics wis wto w- wcorrect wanswers w-
Summarize wdata win wa wuseful wand winformative wmanner
Which wword wis wNOT wpart wof wthe wdefinition wof wdescriptive wstatistics? w- wcorrect
wanswers w-Predicting
A wmarketing wclass wof w50 wstudents wevaluated wthe winstructor wusing wthe wfollowing
wscale: wsuperior, wgood, waverage, wpoor, wand winferior. wThe wdescriptive wsummary
wshowed wthe wfollowing wsurvey wresults: w2% wsuperior, w8% wgood, w45% waverage,
w45% wpoor, wand w0% winferior. w- wcorrect wanswers w-c. wMost wstudents wrated wthe
winstructor was wpoor wor waverage.
What wtype wof wvariable wis wthe wnumber wof wrobberies wreported win wyour wcity? w-
wcorrect wanswers w-Quantitative
,The wNielsen wRatings wbreak wdown wthe wnumber wof wpeople wwatching wa wparticular
wtelevision wshow wby wage. wWhat wlevel wof wmeasurement wis wage? w- wcorrect
wanswers w-Ratio
What wlevel wof wmeasurement wis wa wperson's w"favorite wsport"? w- wcorrect wanswers
w-Nominal
The wfinal wrankings wof wthe wtop w20 wNCAA wcollege wbasketball wteams ware wan
wexample wof wwhich wlevel wof wmeasurement? w- wcorrect wanswers w-Ordinal
What wlevel wof wmeasurement wis wthe wCentigrade wtemperature wscale? w- wcorrect
wanswers w-Interval
A wsurvey wincludes wa wquestion wregarding wmarital wstatus wthat whas wthe wfollowing
wresponses: wsingle, wmarried, wdivorced, wseparated, wor wwidowed. wWhat wis wthe
wscale wof wmeasurement wfor wthis wquestion? w- wcorrect wanswers w-Nominal
A wgroup wof wwomen wtried wfive wbrands wof wfingernail wpolish wand wranked wthem
waccording wto wpreference. wWhat wlevel wof wmeasurement wis wthis? w- wcorrect
wanswers w-Ordinal
Shoe wstyle wis wan wexample wof wwhat wlevel wof wmeasurement? w- wcorrect wanswers
w-Nominal
When wTV wadvertisements wreport w"2 wout wof w3 wdentists wsurveyed windicated wthey
wwould wrecommend wBrand wX wtoothpaste wto wtheir wpatients," wan winformed
wconsumer wmay wquestion wthe wconclusion wbecause wthe: w- wcorrect wanswers w-
Advertisement wdoes wnot winclude wthe wtotal wnumber wof wdentists wsurveyed
A wsample wof wthe wparamedical wfees wcharged wby wclinics wrevealed wthese
wamounts: w$55, w$49, w$50, w$45, w$52, wand w$55. wWhat wis wthe wmedian wcharge?
w- wcorrect wanswers w-51.00
For wa wdata wset wwith wan wodd wnumber wof wobservations wthat whave wbeen wsorted
wfrom wsmallest wto wlargest wvalues, wwhere wis wthe wmedian wlocated? w- wcorrect
wanswers w-(n w+ w1)/2
Assume wa wstudent wreceived wthe wfollowing wgrades wfor wthe wsemester: wHistory,
wB; wStatistics, wA; wSpanish, wC; wand wEnglish, wC. wHistory wand wEnglish ware w5
wcredit-hour wcourses, wStatistics wa w4 wcredit-hour wcourse, wand wSpanish wa w3
wcredit-hour wcourse. wIf w4 wgrade wpoints ware wassigned wfor wan wA, w3 wfor wa wB,
wand w2 wfor wa wC, wwhat wis wthe wweighted wmean wgrade wfor wthe wsemester? w-
wcorrect wanswers w-2.76
, A wdisadvantage wof wusing wan warithmetic wmean wto wsummarize wa wset wof wdata wis
wthat w__________. w- wcorrect wanswers w-It wcan wbe wbiased wby wone wor wtwo
wextremely wsmall wor wlarge wvalues
A wsurvey witem wasked wstudents wto windicate wtheir wclass win wcollege: wfreshman,
wsophomore, wjunior, wor wsenior. wWhich wmeasure(s) wof wcentral wlocation wwould wbe
wappropriate wfor wthe wdata wgenerated wby wthat wquestionnaire witem? w- wcorrect
wanswers w-Mode wand wmedian
The wtimes w(in wminutes) wthat wseveral wunderwriters wtook wto wreview wapplications
wfor wsimilar winsurance wcoverage ware w50, w230, w52, wand w57. wWhat wis wthe
wmedian wlength wof wtime wrequired wto wreview wan wapplication? w- wcorrect wanswers
w-54.5
For wthe wmost wrecent wseven wyears, wthe wU.S. wDepartment wof wEducation
wreported wthe wfollowing wnumber wof wbachelor's wdegrees wawarded win wcomputer
wscience: w4,033; w5,652; w6,407; w7,201; w8,719; w11,154; w15,121. wWhat wis wthe
wannual warithmetic wmean wnumber wof wdegrees wawarded? w- wcorrect wanswers w-
About w8,327
Which wof wthe wfollowing wmeasures wof wdispersion ware wbased won wdeviations wfrom
wthe wmean? w- wcorrect wanswers w-All wapply
From wthe weasiest wto wthe whardest w"ease wof winterpretation," wrank wthe wmeasures
wof wdispersion. w- wcorrect wanswers w-Range, wmean wdeviation, wvariance
The wweights wof wa wsample wof wcrates wready wfor wshipment wto wMoscow, wRussia
ware w(in wkilograms): w103, w97, w101, w106, wand w103. wWhat wis wthe wmean
wdeviation? w- wcorrect wanswers w-2.4 wkg
A wsample wof wassistant wprofessors won wthe wbusiness wfaculty wat wstate-supported
winstitutions win wOhio wrevealed wthe wmean wincome wto wbe w$72,000 wfor wnine
wmonths, wwith wa wstandard wdeviation wof w$3,000. wUsing wChebyshev's wTheorem,
wwhat wproportion wof wthe wfaculty wearns wmore wthan w$66,000, wbut wless wthan
w$78,000? w- wcorrect wanswers w-At wleast w75%
Based won wthe wEmpirical wRule, wwhat wpercent wof wthe wobservations wwill wlie
wbetween wplus wor wminus wtwo wstandard wdeviations wfrom wthe wmean? w- wcorrect
wanswers w-95%
What wis wthe wrelationship wbetween wthe wvariance wand wthe wstandard wdeviation? w-
wcorrect wanswers w-Variance wis wthe wsquare wof wthe wstandard wdeviation.
What wstatistics ware wneeded wto wdraw wa wbox wplot? w- wcorrect wanswers w-The
wminimum, wmaximum, wmedian, wfirst wand wthird wquartiles
FINAL EXAM GRADED A+
The wmain wpurpose wof wdescriptive wstatistics wis wto w- wcorrect wanswers w-
Summarize wdata win wa wuseful wand winformative wmanner
Which wword wis wNOT wpart wof wthe wdefinition wof wdescriptive wstatistics? w- wcorrect
wanswers w-Predicting
A wmarketing wclass wof w50 wstudents wevaluated wthe winstructor wusing wthe wfollowing
wscale: wsuperior, wgood, waverage, wpoor, wand winferior. wThe wdescriptive wsummary
wshowed wthe wfollowing wsurvey wresults: w2% wsuperior, w8% wgood, w45% waverage,
w45% wpoor, wand w0% winferior. w- wcorrect wanswers w-c. wMost wstudents wrated wthe
winstructor was wpoor wor waverage.
What wtype wof wvariable wis wthe wnumber wof wrobberies wreported win wyour wcity? w-
wcorrect wanswers w-Quantitative
,The wNielsen wRatings wbreak wdown wthe wnumber wof wpeople wwatching wa wparticular
wtelevision wshow wby wage. wWhat wlevel wof wmeasurement wis wage? w- wcorrect
wanswers w-Ratio
What wlevel wof wmeasurement wis wa wperson's w"favorite wsport"? w- wcorrect wanswers
w-Nominal
The wfinal wrankings wof wthe wtop w20 wNCAA wcollege wbasketball wteams ware wan
wexample wof wwhich wlevel wof wmeasurement? w- wcorrect wanswers w-Ordinal
What wlevel wof wmeasurement wis wthe wCentigrade wtemperature wscale? w- wcorrect
wanswers w-Interval
A wsurvey wincludes wa wquestion wregarding wmarital wstatus wthat whas wthe wfollowing
wresponses: wsingle, wmarried, wdivorced, wseparated, wor wwidowed. wWhat wis wthe
wscale wof wmeasurement wfor wthis wquestion? w- wcorrect wanswers w-Nominal
A wgroup wof wwomen wtried wfive wbrands wof wfingernail wpolish wand wranked wthem
waccording wto wpreference. wWhat wlevel wof wmeasurement wis wthis? w- wcorrect
wanswers w-Ordinal
Shoe wstyle wis wan wexample wof wwhat wlevel wof wmeasurement? w- wcorrect wanswers
w-Nominal
When wTV wadvertisements wreport w"2 wout wof w3 wdentists wsurveyed windicated wthey
wwould wrecommend wBrand wX wtoothpaste wto wtheir wpatients," wan winformed
wconsumer wmay wquestion wthe wconclusion wbecause wthe: w- wcorrect wanswers w-
Advertisement wdoes wnot winclude wthe wtotal wnumber wof wdentists wsurveyed
A wsample wof wthe wparamedical wfees wcharged wby wclinics wrevealed wthese
wamounts: w$55, w$49, w$50, w$45, w$52, wand w$55. wWhat wis wthe wmedian wcharge?
w- wcorrect wanswers w-51.00
For wa wdata wset wwith wan wodd wnumber wof wobservations wthat whave wbeen wsorted
wfrom wsmallest wto wlargest wvalues, wwhere wis wthe wmedian wlocated? w- wcorrect
wanswers w-(n w+ w1)/2
Assume wa wstudent wreceived wthe wfollowing wgrades wfor wthe wsemester: wHistory,
wB; wStatistics, wA; wSpanish, wC; wand wEnglish, wC. wHistory wand wEnglish ware w5
wcredit-hour wcourses, wStatistics wa w4 wcredit-hour wcourse, wand wSpanish wa w3
wcredit-hour wcourse. wIf w4 wgrade wpoints ware wassigned wfor wan wA, w3 wfor wa wB,
wand w2 wfor wa wC, wwhat wis wthe wweighted wmean wgrade wfor wthe wsemester? w-
wcorrect wanswers w-2.76
, A wdisadvantage wof wusing wan warithmetic wmean wto wsummarize wa wset wof wdata wis
wthat w__________. w- wcorrect wanswers w-It wcan wbe wbiased wby wone wor wtwo
wextremely wsmall wor wlarge wvalues
A wsurvey witem wasked wstudents wto windicate wtheir wclass win wcollege: wfreshman,
wsophomore, wjunior, wor wsenior. wWhich wmeasure(s) wof wcentral wlocation wwould wbe
wappropriate wfor wthe wdata wgenerated wby wthat wquestionnaire witem? w- wcorrect
wanswers w-Mode wand wmedian
The wtimes w(in wminutes) wthat wseveral wunderwriters wtook wto wreview wapplications
wfor wsimilar winsurance wcoverage ware w50, w230, w52, wand w57. wWhat wis wthe
wmedian wlength wof wtime wrequired wto wreview wan wapplication? w- wcorrect wanswers
w-54.5
For wthe wmost wrecent wseven wyears, wthe wU.S. wDepartment wof wEducation
wreported wthe wfollowing wnumber wof wbachelor's wdegrees wawarded win wcomputer
wscience: w4,033; w5,652; w6,407; w7,201; w8,719; w11,154; w15,121. wWhat wis wthe
wannual warithmetic wmean wnumber wof wdegrees wawarded? w- wcorrect wanswers w-
About w8,327
Which wof wthe wfollowing wmeasures wof wdispersion ware wbased won wdeviations wfrom
wthe wmean? w- wcorrect wanswers w-All wapply
From wthe weasiest wto wthe whardest w"ease wof winterpretation," wrank wthe wmeasures
wof wdispersion. w- wcorrect wanswers w-Range, wmean wdeviation, wvariance
The wweights wof wa wsample wof wcrates wready wfor wshipment wto wMoscow, wRussia
ware w(in wkilograms): w103, w97, w101, w106, wand w103. wWhat wis wthe wmean
wdeviation? w- wcorrect wanswers w-2.4 wkg
A wsample wof wassistant wprofessors won wthe wbusiness wfaculty wat wstate-supported
winstitutions win wOhio wrevealed wthe wmean wincome wto wbe w$72,000 wfor wnine
wmonths, wwith wa wstandard wdeviation wof w$3,000. wUsing wChebyshev's wTheorem,
wwhat wproportion wof wthe wfaculty wearns wmore wthan w$66,000, wbut wless wthan
w$78,000? w- wcorrect wanswers w-At wleast w75%
Based won wthe wEmpirical wRule, wwhat wpercent wof wthe wobservations wwill wlie
wbetween wplus wor wminus wtwo wstandard wdeviations wfrom wthe wmean? w- wcorrect
wanswers w-95%
What wis wthe wrelationship wbetween wthe wvariance wand wthe wstandard wdeviation? w-
wcorrect wanswers w-Variance wis wthe wsquare wof wthe wstandard wdeviation.
What wstatistics ware wneeded wto wdraw wa wbox wplot? w- wcorrect wanswers w-The
wminimum, wmaximum, wmedian, wfirst wand wthird wquartiles
