Isds 361A Final Exam Concept Questions Exam Newest Actual Exam Complete 150 Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version 2026!!!

ISDS 361A FINAL EXAM CONCEPT
QUESTIONS EXAM NEWEST ACTUAL
EXAM COMPLETE 150 QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION
2026!!!
usesmallmthemdatam(themmostmefficient)m-mCORRECTmANSWERmStandardmdeviation



Probabilitym-
mCORRECTmANSWERmlikelihoodmthatmamparticularmeventmwillmoccurlikelihoodmthatmthemrandommva


riablemtakesmvaluesmwithinmamparticularmrange.



coefficientmofmvariationmformulam-mCORRECTmANSWERmstandardmdeviation/mean



coefficientmofmvariationm-
mCORRECTmANSWERmAmmeasuremofmrelativemvariabilitymcomputedmbymdividingmthemstandardmdevi


ationmbymthemmeanmandmmultiplyingmbym100.



ifmthemmeanmordermdaysm(thatmis,maverage)maremsignificantlymdifferent?mInmthismcase,musemofmstand
ardmdeviationmmaymnotmbemeffectivemormapplicablembecausemthemcomparisonmwillmnotmbemvalidmso
muse




empiricalmrulemfrequencym-
mCORRECTmANSWERmApproximatelym68%mofmthemvaluesmaremwithinmonemstandardmdeviationmofmt


hemmean.Approximatelym95%mofmvaluesmaremwithinmtwomstandardmdeviationsmofmthemmean.Almo
stmallm(100%)mthemdatamvaluesmaremwithinmthreemstandardmdeviationsmofmhemmean

,WhenmthemdatamdoesmnotmresemblemNORMAL,mwemusem-
mCORRECTmANSWERmwhatmismknownmasmChebyshev'smTheoremminmplacemofmthemEmpiricalmrule.




ThemusemofmthemEmpiricalmrulemrequiresm-
mCORRECTmANSWERmthemdatamtomresemblemthemnormalmdistribution,mhasmtombemuni-


modal,msymmetric



Formzm>1,mChebyshev'smtheoremmstatesmthatm-
mCORRECTmANSWERmatmleastm(𝟏−𝟏/z^2)100%mofmthemdatamvaluesmmustmbemwithinmzmstandardmde


viationsmofmthemmean.



Chebyshev'smtheoremmismmoremflexiblemthan

themEmpiricalmrulembecausem-
mCORRECTmANSWERmitmappliesmtomanymdatamdistribution.mHowever,mitmismlessmprecise.




DomnotmusemEmpiricalmrulem-mwhenm-
mCORRECTmANSWERmThemdistributionmismskewedThemdistributionmhasmmoremthanmonemmode




OutliermdetectionmusingmthemEmpiricalmRulem-mCORRECTmANSWERmanymvaluemwithmamz-
scoremvaluembelowm-
3mormmoremthanm3mmaymbemconsideredmanmoutlier.mThemjustificationmismthat:mpermEmpiricalmRule,m
almostmallmvaluesmshouldmbemwithinm3mstandardmdeviationsmofmthemmean.mIfmnot,mthatmvaluemmust
mbemanmoutlier.




EmpiricalmRulem-mCORRECTmANSWERmWhenmthemshapemofmthemdistribution/histogrammismbell-
shapedm(moundmshaped)m,msymmetricmandmunimoda



z-scorem-
mCORRECTmANSWERmammeasuremofmhowmmanymstandardmdeviationsmyoumaremawaymfrommthemnor


mm(averagemormmean)

, (x-mean)/standardmdeviation



Mostmcommonmmeasuresmofmvariability:m-mCORRECTmANSWERmStandardmdeviationmandmCV



Themcollectionmofmallmunitsmofminterestminmamparticularmstudymismcalled

a.mSample

b.mParameter

c.mPopulation

d.mStatisticm-mCORRECTmANSWERmPopulation



3mwaysmofmmeasuringmvariabilitym-mCORRECTmANSWERmSDmIQRmrange



quartilempercentagesm-mCORRECTmANSWERmQ1-m25%Q2-50%Q3-75%



Statisticsm-
mCORRECTmANSWERmismamwaymtomgetmINFORMATIONmfrommDATAUsingmSTATISTICSmwemdrawmconcl


usionsm(playsmamroleminmmakingmsensemofmcomplexmdatambymextractingmusefulminformation.)mfromm
data.



Samplemproportion;mp m̅ -
mCORRECTmANSWERmp ̅mismthempointmestimatormormsamplemstatisticmformthempopulationmparamete


r

p ̅=x/n



Samplingmdistributionmofmp ̅m:

ismsimplymthemcollectionmofmallmpossiblemvaluesmofmp ̅