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Alta 1- Sampling and Data Exam Questions and Answers
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Alta 1- Sampling and Data Exam Questions and Answers
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Alta 1- Sampling and Data ExamQuestions and Answers
Susan iiwants iito iiestimate iithe iimean iinumber iiof iiads iifor iieach iifacebook iipage. iiShe
iirecords iithe iinumber iiof iiads iifor iieach iiof ii200 iirandomly iiselected iifacebook iipages.
iiWhat iiis iithe iipopulation? ii- iiAnswers ii-all iifacebook iipages
The iipopulation iiis iithe iientire iigroup iiof iiindividuals iibeing iistudied. iiIn iithis iicase, iithe
iipopulation iiis iiall iifacebook iipages
What iido iithe iistatistics iiof iimode iiand iimean iimeasure? ii- iiAnswers ii-Mode: iiMost
iifrequent iisales iitax iirate. iiMean: iiAverage iisales iitax iirate.
The iifollowing iiare iithe iidefinitions iiof iithe iimode iiand iimean. iiMode: iiMost iifrequnt iisales
iitax iirate. iiMean: iiAverage iisales iitax iirate.
The iifollowing iidata iiset iiprovides iithe iispecific iisales iitax iirates iifor iicounties iiin
iiMissouri. ii
A iicar iidealer iiin iiHartville, iiMissouri iiwants iito iistate iithat iicustomers iiwill iipay iithe
iilowest iisales iitaxes iiin iiWright iiCounty iiat iiher iidealership. iiWhat iiis iithe iipopulation? ii-
iiAnswers ii-Every iicity iiin iiWright iiCounty
The iipopulation iiis iithe iientire iigroup iiof iiindividuals iibeing iistudied. iiIn iithis iicase, iithe
iipopulation iiis iievery iicity iiin iiWright iiCounty.
Timothy iiwants iito iiestimate iithe iinumber iiof iicustomers iithat iiare iisatisfied iiwith iithe
iicompany's iibranding. iiHe iisurveys ii100 iirandomly iiselected iicustomers iito iidetermine
iiwhether iior iinot iithey iiwere iisatisfied. iiWhat iiis iithe iiparameter? ii- iiAnswers ii-the
iinumber iiof iiall iicustomers iithat iiwould iibe iisatisfied iiwith iithe iicompany's iibranding
A iiparameter iiis iia iinumber iithat iiis iiused iito iirepresent iia iipopulation iicharacteristic. iiIn
iithis iicase, iithe iiparameter iiis iithe iinumber iiof iiall iicustomers iithat iiwould iibe iisatisfied
iiwith iithe iicompany's iibranding
There iiare ii6,000 iipeople iiwho iiattended iia iitechnology iiconference iiat iia iiconvention
iicenter. iiThere iiare iithree iistart-up iicompanies iiwho iiare iiparticipating iiin iithe
iiconference ii- iiCP iiTechnologies, iiX-Performance, iiand iiA-Robotics. iiYou iiwant iito iifind
iiout iiwhich iicompany iiis iimost iipopular iiamongst iithe iipeople iiattending. iiYou iiask ii500
iipeople iias iithey iiwalk iiinto iithe iiconvention iicenter.
Which iirepresents iithe iipopulation iiin iithis iiscenario? ii- iiAnswers ii-Correct iianswer:
The ii6,000 iipeople iiattending iithe iiconference
,You iiwant iito iidetermine iithe iioverall iigrade iipoint iiaverage ii(GPA) iiat iiyour iischool.
iiThere iiare ii1,800 iistudents iiat iiyour iischool. iiSince iiyou iiwant iito iicollect iidata iiabout iiall
iiof iithe iistudents, iiall ii1,800 iistudents iiis iithe iipopulation.
But, iiit iiwould iibe iidifficult iito iiask iievery iisingle iione iiof iithe ii1,800 iistudents iiin iiyour
iischool iiabout iihis/her iiGPA. iiSo, iiit iiwould iimake iisense iito iigain iiinformation iifrom iia
iismaller iigroup iiof iistudents iiwho iiattend iiyour iischool. iiSo, iiyou iisurvey ii200 iirandom
iistudents. iiThis iiportion iiof iithe iipopulation iiis iicalled iithe iisample.
The iigrade iipoint iiaverages iiof iithe iistudents iisurveyed iiwould iibe iithe iidata iicollected.
A iistatistic iiand iia iiparameter iiare iiboth iidescriptions iiof iigroups, iibut iithey iirepresent
iidifferent iigroups. ii- iiAnswers ii-A iiparameter iiis iia iinumber iithat iiis iia iiproperty iiof iithe
iipopulation. iiSometimes, iiwhen iithe iipopulation iiis iismall iienough, iithere iiis iino iineed iito
iitake iia iisample, iiand iiso iidetermining iia iiparameter iiis iieasier iiand iia iimore iiaccurate
iireflection iiof iithe iipopulation. iiFor iithis iiexample, iithe iiparameter iiwould iibe iithe iioverall
iiGPA iiof iiall ii1,800 iistudents iiat iiyour iischool. iiA iistatistic iiis iia iinumber iithat iirepresents
iia iiproperty iiof iithe iisample. iiThe iistatistic iiis iian iiestimate iiof iia iipopulation iiparameter.
iiFor iithis iiexample, iithe iistatistic iiis iithe iiGPA iifor iithe ii200 iirandom iistudents.
There iiare ii100 iiSenators iiin iithe iiU.S. iiSenate. ii20 iiSenators iivoted iiagainst iia iibill iilast
iimonth. iiThis iinumber iiis iian iiexample iiof iia iiparameter, iibecause iiit iiis iia iinumber iithat
iirepresents iithe iiwhole iipopulation.There iiare ii12,000 iipeople iiat iia iifootball iistadium.
iiYou iiwant iito iidetermine iithe iiaverage iinumber iiof iimiles iipeople iidrove iito iithe iistadium.
iiInstead iiof iisurveying iithe iiwhole iipopulation iiof ii12,000 iipeople, iiyou iirandomly iichoose
ii1,000 iipeople iias iiyour iisample. iiThe iiaverage iinumber iiof iimiles iidriven iito iithe iistadium
iiby iithe iisample iiis iian iiexample iiof iia iistatistic. ii- iiAnswers ii-There iiare ii100 iiSenators iiin
iithe iiU.S. iiSenate. ii20 iiSenators iivoted iiagainst iia iibill iilast iimonth. iiThis iinumber iiis iian
iiexample iiof iia iiparameter, iibecause iiit iiis iia iinumber iithat iirepresents iithe iiwhole
iipopulation.There iiare ii12,000 iipeople iiat iia iifootball iistadium. iiYou iiwant iito iidetermine
iithe iiaverage iinumber iiof iimiles iipeople iidrove iito iithe iistadium. iiInstead iiof iisurveying
iithe iiwhole iipopulation iiof ii12,000 iipeople, iiyou iirandomly iichoose ii1,000 iipeople iias
iiyour iisample. iiThe iiaverage iinumber iiof iimiles iidriven iito iithe iistadium iiby iithe iisample
iiis iian iiexample iiof iia iistatistic.
Angela iiwants iito iiestimate iithe iimean iinumber iiof iirunners iifor iieach iitrack iiteam. iiShe
iirecords iithe iinumber iiof iirunners iiof ii20 iirandomly iiselected iitrack iiteams. iiWhat iiis iithe
iidata?
Data iiare iithe iiresult iiof iisampling iifrom iia iipopulation. iiData iiare iithe iiactual iivalues iiof
iithe iivariable. iiThe iidata iiin iithis iiexample iiis iithe iispecific iinumber iiof iirunners iifor iieach
iirandomly iiselected iitrack iiteam. ii- iiAnswers ii-Angela iiwants iito iiestimate iithe iimean
iinumber iiof iirunners iifor iieach iitrack iiteam. iiShe iirecords iithe iinumber iiof iirunners iiof ii20
iirandomly iiselected iitrack iiteams. iiWhat iiis iithe iidata?
,Data iiare iithe iiresult iiof iisampling iifrom iia iipopulation. iiData iiare iithe iiactual iivalues iiof
iithe iivariable. iiThe iidata iiin iithis iiexample iiis iithe iispecific iinumber iiof iirunners iifor iieach
iirandomly iiselected iitrack iiteam.
Patrick iiwants iito iiestimate iithe iipercentage iiof iistudents iithat iiuse iiyoutube iito iistudy.
iiHe iiasks iia iirandomly iiselected iigroup iiof ii125 iistudents iiwhether iior iinot iithey iiuse
iiyoutube iito iistudy. iiWhat iiis iithe iistatistic?
A iistatistic iiis iia iinumber iithat iirepresents iia iiproperty iiof iithe iisample. iiThe iistatistic iiin
iithis iiexample iiis iithe iipercentage iiof iisurveyed iistudents iithat iiuse iiyoutube iito iistudy. ii-
iiAnswers ii-Patrick iiwants iito iiestimate iithe iipercentage iiof iistudents iithat iiuse iiyoutube
iito iistudy. iiHe iiasks iia iirandomly iiselected iigroup iiof ii125 iistudents iiwhether iior iinot iithey
iiuse iiyoutube iito iistudy. iiWhat iiis iithe iistatistic?
A iistatistic iiis iia iinumber iithat iirepresents iia iiproperty iiof iithe iisample. iiThe iistatistic iiin
iithis iiexample iiis iithe iipercentage iiof iisurveyed iistudents iithat iiuse iiyoutube iito iistudy.
Joseph iiwants iito iiestimate iithe iimean iinumber iiof iideputies iifor iieach iisenior iiofficer iiin
iihis iitown. iiHe iirecords iithe iinumber iiof iideputies iifor iieach iiof ii20 iirandomly iiselected
iisenior iiofficers iiin iithe iitown. iiWhat iiis iithe iisample?
A iisample iiof iithe iipopulation iiis iia iismaller iiportion iiof iithe iilarger iipopulation iitaken iito
iido iia iistudy. iiThe iisample iiin iithis iiexample iiis iithe ii20 iirandomly iiselected iisenior
iiofficers. ii- iiAnswers ii-Joseph iiwants iito iiestimate iithe iimean iinumber iiof iideputies iifor
iieach iisenior iiofficer iiin iihis iitown. iiHe iirecords iithe iinumber iiof iideputies iifor iieach iiof ii20
iirandomly iiselected iisenior iiofficers iiin iithe iitown. iiWhat iiis iithe iisample?
A iisample iiof iithe iipopulation iiis iia iismaller iiportion iiof iithe iilarger iipopulation iitaken iito
iido iia iistudy. iiThe iisample iiin iithis iiexample iiis iithe ii20 iirandomly iiselected iisenior
iiofficers.
Ralph iiwants iito iiestimate iithe iiaverage iinumber iiof iicoworkers iithat iibike iito iiwork. iiHe
iiasks iia iirandomly iiselected iigroup iiof ii25 iicoworkers iiwhether iior iinot iithey iibike iito
iiwork. iiWhat iiis iithe iiparameter?
A iiparameter iiis iia iinumber iithat iiis iia iiproperty iiof iithe iipopulation. iiThe iiparameter iiin
iithis iiexample iiis iithe iiaverage iinumber iiof iiall iicoworkers iithat iibike iito iiwork. ii- iiAnswers
ii-Ralph iiwants iito iiestimate iithe iiaverage iinumber iiof iicoworkers iithat iibike iito iiwork. iiHe
iiasks iia iirandomly iiselected iigroup iiof ii25 iicoworkers iiwhether iior iinot iithey iibike iito
iiwork. iiWhat iiis iithe iiparameter?
A iiparameter iiis iia iinumber iithat iiis iia iiproperty iiof iithe iipopulation. iiThe iiparameter iiin
iithis iiexample iiis iithe iiaverage iinumber iiof iiall iicoworkers iithat iibike iito iiwork.
Angela iiwants iito iiestimate iithe iimean iinumber iiof iiads iifor iieach iifacebook iipage. iiShe
iirecords iithe iinumber iiof iiads iifor iieach iiof ii200 iirandomly iiselected iifacebook iipages.
, iiWhat iiis iithe iidata? ii- iiAnswers ii-the iispecific iinumber iiof iiads iifor iieach iirandomly
iiselected iifacebook iipage
Data iiis iia iiset iiof iiobservations. iiIn iithis iicase, iithe iidata iiis iithe iispecific iinumber iiof iiads
iifor iieach iirandomly iiselected iifacebook iipage.
Is iithe iistatement iibelow iitrue iior iifalse?Data iiis iia iiset iiof iiobservations iior iipossible
iioutcomes. ii- iiAnswers ii-True
It iiis iitrue iithat iidata iiis iidefined iias iia iiset iiof iiobservations iior iipossible iioutcomes.
The iifollowing iidata iiset iiprovides iithe iispecific iisales iitax iirates iifor iicounties iiin
iiMissouri.
An iionline iiclothing iistore iiwants iito iilocate iiin iia iicity iiin iiWorth iiCounty, iiMissouri iithat
iihas iithe iilowest iisales iitax iirate. iiWhat iimode iiwill iihe iifind iiin iithe iidata? ii- iiAnswers ii-
The iisales iitax iirates iifor iiWorth iiCounty iiare ii0.061, ii0.071, ii0.081, ii0.061, ii0.061,
ii0.061. iiThe iivalue ii0.061 iioccurs iifour iitimes iiin iithe iidata iiset iiwhile iithe iivalues ii0.071
iiand ii0.081 iieach iioccur iionce. iiTherefore ii0.061 iiis iithe iimode.
Timothy iiwants iito iiestimate iithe iimean iinumber iiof iicustomer iiretention iifrom iihis
iicompany. iiHe iirecords iithe iinumber iiof iiretentions iifrom ii75 iirandomly iiselected
iicompany iisites. iiWhat iiis iithe iistatistic? ii- iiAnswers ii-the iimean iinumber iiof iiretentions
iifrom iithe iirandomly iiselected iicompany iisites
A iistatistic iiis iia iinumerical iicharacteristic iiof iithe iisample. iiIn iithis iicase, iithe iistatistic iiis
iinumber iiof iiretentions iifrom iithe iirandomly iiselected iicompany iisites.
Which iiof iithe iifollowing iirepresents iithe iipopulation iiin iithe iiscenario iibelow?
A iiresearcher iiwants iito iiknow iiwhat iipercentage iiof iipeople iiwho iilive iiin iiGermany iiare
iisatisfied iiwith iitheir iigovernment iispending. iiSurveys iiare iisent iito iipeople iiwho iilive iiin
iithe iicity iilimits iiof iiBerlin, iiFrankfurt, iiand iiMunich. ii- iiAnswers ii-People iiwho iilive iiin
iiGermany
The iiresearcher iiwants iito iilearn iiabout iithe iisatisfaction iiof iiall iithe iipeople iiin iiGermany,
iiso iithis iiis iithe iipopulation.
The iifollowing iidata iiset iiprovides iithe iispecific iisales iitax iirates iifor iicounties iiin
iiMissouri.
For iiWorth iiCounty, iiis iithe iimedian iithe iisame iias iithe iimode iifor iithis iispecific iisample?
ii- iiAnswers ii-Yes
To iifind iithe iimedian iiwe iimust iifirst iiarrange iithe iidata iifrom iismallest iito iilargest:
ii0.061,0.061,0.061,0.061,0.071,0.081. iiTherefore iithe iimedian iiis ii0.061. ii0.061 iiis iithe
iimost iicommon iinumber iiin iithe iidata iiso iiit iiis iithe iimode. iiTherefore iithe iimedian iiis iithe
iisame iias iithe iimode.
Thomas iiwants iito iiestimate iithe iimean iiheight iiof iistudents iiattending iihis iicollege. iiHe
iirecords iithe iiheights iiof ii25 iirandomly iiselected iistudents iiattending iithe iicollege. iiWhat
iiis iithe iiparameter? ii- iiAnswers ii-the iimean iiheight iiof iiall iistudents iiattending iithe
iicollege
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