chap03TIFBSAFC5Word格式文档下载.docx

chap03TIFBSAFC5Word格式文档下载.docx

《chap03TIFBSAFC5Word格式文档下载.docx》由会员分享，可在线阅读，更多相关《chap03TIFBSAFC5Word格式文档下载.docx（39页珍藏版）》请在冰点文库上搜索。

c

Moderate

measureofcentraltendency,mode,arithmeticmean,median

3.Whichofthearithmeticmean,median,andmodeareresistantmeasuresofcentraltendency?

a）Thearithmeticmeanandmedianonly.

b）Themedianandmodeonly.

c）Themodeandarithmeticmeanonly.

d）Allthethreeareresistantmeasures.

b

measureofcentraltendency,resistanttooutliers,mean,median,mode

4.Inaright-skeweddistribution

a）themedianequalsthearithmeticmean.

b）themedianislessthanthearithmeticmean.

c）themedianislargerthanthearithmeticmean.

d）noneoftheabove.

shape

5.Whichofthefollowingstatementsaboutthemedianisnottrue?

a）Itismoreaffectedbyextremevaluesthanthearithmeticmean.

b）Itisameasureofcentraltendency.

c）ItisequaltoQ2.

d）Itisequaltothemodeinbell-shaped"

normal"

distributions.

a

median,measureofcentraltendency,resistanttooutliers,quartile

6.Inaperfectlysymmetricalbell-shaped"

distribution

a）thearithmeticmeanequalsthemedian.

b）themedianequalsthemode.

c）thearithmeticmeanequalsthemode.

d）Alltheabove.

shape,normaldistribution

7.Inaperfectlysymmetricaldistribution

a）therangeequalstheinterquartilerange.

b）theinterquartilerangeequalsthearithmeticmean.

c）themedianequalsthearithmeticmean.

d）thevarianceequalsthestandarddeviation.

8.Whenextremevaluesarepresentinasetofdata,whichofthefollowingdescriptivesummarymeasuresaremostappropriate:

a）CVandrange.

b）arithmeticmeanandstandarddeviation.

c）interquartilerangeandmedian.

d）varianceandinterquartilerange.

resistanttooutliers,coefficientofvariation,range,arithmeticmean,standarddeviation,interquartilerange,median,variance

9.Ingeneral,whichofthefollowingdescriptivesummarymeasurescannotbeeasilyapproximatedfromaboxplot?

a）Thevariance.

b）Therange.

c）Theinterquartilerange.

d）Themedian.

boxplot,variance,range,interquartilerange,median

10.Thesmallerthespreadofscoresaroundthearithmeticmean,

a）thesmallertheinterquartilerange.

b）thesmallerthestandarddeviation.

c）thesmallerthecoefficientofvariation.

variation,arithmeticmean,interquartilerange,standarddeviation,coefficientofvariation

11.Whichdescriptivesummarymeasuresareconsideredtoberesistantstatistics?

a）Thearithmeticmeanandstandarddeviation.

b）Theinterquartilerangeandrange.

c）Themodeandvariance.

d）Themedianandinterquartilerange.

resistanttooutliers,arithmeticmean,standarddeviation,interquartilerange,range,mode,variance,median

12.Inright-skeweddistributions,whichofthefollowingisthecorrectstatement?

a）ThedistancefromQ1toQ2islargerthanthedistancefromQ2toQ3.

b）ThedistancefromQ1toQ2issmallerthanthedistancefromQ2toQ3.

c）Thearithmeticmeanissmallerthanthemedian.

d）Themodeislargerthanthearithmeticmean.

Easy

shape,quartiles,arithmeticmean,mode

13.Inperfectlysymmetricaldistributions,whichofthefollowingisNOTacorrectstatement?

a）ThedistancefromQ1toQ2equalstothedistancefromQ2toQ3.

b）ThedistancefromthesmallestobservationtoQ1isthesameasthedistancefromQ3tothelargestobservation.

c）ThedistancefromthesmallestobservationtoQ2isthesameasthedistancefromQ2tothelargestobservation.

d）ThedistancefromQ1toQ3ishalfofthedistancefromthesmallesttothelargestobservation.

shape,quartiles,five-numbersummary,quartiles

14.Inleft-skeweddistributions,whichofthefollowingisthecorrectstatement?

a）ThedistancefromQ1toQ2issmallerthanthedistancefromQ2toQ3.

b）ThedistancefromthesmallestobservationtoQ1islargerthanthedistancefromQ3tothelargestobservation.

c）ThedistancefromthesmallestobservationtoQ2issmallerthanthedistancefromQ2tothelargestobservation.

d）ThedistancefromQ1toQ3istwicethedistancefromtheQ1toQ2.

15.Accordingtotheempiricalrule,ifthedataforma"

bell-shaped"

normaldistribution,_______percentoftheobservationswillbecontainedwithin2standarddeviationsaroundthearithmeticmean.

a）68.26

b）88.89

c）93.75

d）95.44

empiricalrule,normaldistribution

16.Accordingtotheempiricalrule,ifthedataforma"

normaldistribution,_______percentoftheobservationswillbecontainedwithin1standarddeviationaroundthearithmeticmean.

b）75.00

c）88.89

d）93.75

17.Accordingtotheempiricalrule,ifthedataforma"

normaldistribution,_______percentoftheobservationswillbecontainedwithin3standarddeviationsaroundthearithmeticmean.

c）95.0

d）99.7

18.WhichofthefollowingisNOTameasureofcentraltendency?

a）Thearithmeticmean.

b）Themedian.

c）Themode.

d）Theinterquartilerange.

measureofcentraltendency,arithmeticmean,median,mode,interquartilerange

19.WhichofthefollowingisNOTsensitivetoextremevalues?

a）Therange.

b）Thestandarddeviation.

d）Thecoefficientofvariation.

Moderate

resistanttooutliers,range,standarddeviation,interquartilerange,coefficientofvariation

20.Whichofthefollowingissensitivetoextremevalues?

a）Themedian.

b）Theinterquartilerange.

c）Thearithmeticmean.

d）The1stquartile.

resistanttooutliers,median,interquartilerange,arithmeticmean,quartiles

21.Whichofthefollowingistheeasiesttocompute?

d）Thestandarddeviation.

mode,arithmeticmean,median

22.AccordingtotheChebyshevrule,atleast75%ofallobservationsinanydatasetarecontainedwithinadistanceofhowmanystandarddeviationsaroundthemean?

a）1

b）2

c）3

d）4

Chebyshevrule

23.AccordingtotheChebyshevrule,atleast93.75%ofallobservationsinanydatasetarecontainedwithinadistanceofhowmanystandarddeviationsaroundthemean?

24.AccordingtotheChebyshevrule,atleastwhatpercentageoftheobservationsinanydatasetarecontainedwithinadistanceof3standarddeviationsaroundthemean?

a）67%

b）75%

c）88.89%

d）99.7%

25.AccordingtotheChebyshevrule,atleastwhatpercentageoftheobservationsinanydatasetarecontainedwithinadistanceof2standarddeviationsaroundthemean?

d）95%

TABLE3-1

Healthcareissuesarereceivingmuchattentioninbothacademicandpoliticalarenas.Asociologistrecentlyconductedasurveyofcitizensover60yearsofagewhosenetworthistoohightoqualifyforMedicaidandhavenoprivatehealthinsurance.Theagesof25uninsuredseniorcitizenswereasfollows:

60616263646566686869707373

747576768181828687899092

26.ReferringtoTable3-1,calculatethearithmeticmeanageoftheuninsuredseniorcitizenstothenearesthundredthofayear.

74.04years

PRDIFFICULTY:

arithmeticmean

27.ReferringtoTable3-1,identifythemedianageoftheuninsuredseniorcitizens.

73years

median

28.ReferringtoTable3-1,identifythefirstquartileoftheagesoftheuninsuredseniorcitizens.

65.5years

quartiles

29.ReferringtoTable3-1,identifythethirdquartileoftheagesoftheuninsuredseniorcitizens.

81.5years

30.ReferringtoTable3-1,identifytheinterquartilerangeoftheagesoftheuninsuredseniorcitizens.

16years

interquartilerange

31.ReferringtoTable3-1,identifywhichofthefollowingisthecorrectstatement.

a）Onefourthoftheseniorcitizenssampledarebelow65.5yearsofage.

b）Themiddle50%oftheseniorcitizenssampledarebetween65.5and73.0yearsofage.

c）Theaverageageofseniorcitizenssampledis73.5yearsofage.

d）Alloftheabovearecorrect.

M