Foradvancedindustrializednations,the Firearms data fileatthetextwebsiteshowsannual homicide rates(permillionpopulation)andthenumberoffirearms(per100people),withdata takenfromWikipediaand smallarmssurvey.org. (a) Constructascatterplotandhighlightanyobservationsthatfallapartfromthegeneral trend. (b) Findthecorrelationwithandwithouttheoutlyingobservation.Whyisitsodifferentin the twocases? (c) Fitthelinearregressionmodelwithandwithouttheoutlyingobservation,andnotehow
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Foradvancedindustrializednations,the Firearms data fileatthetextwebsiteshowsannual homicide rates(permillionpopulation)andthenumberoffirearms(per100people),withdata takenfromWikipediaand smallarmssurvey.org.
(a) Constructascatterplotandhighlightanyobservationsthatfallapartfromthegeneral trend.
(b) Findthecorrelationwithandwithouttheoutlyingobservation.Whyisitsodifferentin the twocases?
(c) Fitthelinearregressionmodelwithandwithouttheoutlyingobservation,andnotehow influentialanoutliercanbeonthefit.
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Related Book For 
Foundations Of Statistics For Data Scientists With R And Python
ISBN: 9780367748456
1st Edition
Authors: Alan Agresti
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