Wiley 2010 1Chapter 6 - Statistical Quality ControlOperations ManagementbyR. Dan Reid & Nada R. Sanders4th Edition Wiley 2010 Wiley 2010 2Learning Objecties!escribe categories o" SQCE#$lain the use o" descri$tie statistics in %easuring &uality characteristics'denti"y and describe causes o" ariation!escribe the use o" control charts'denti"y the di(erences bet)een #-bar* +-* $-* and c-charts Wiley 2010 ,Learning Objecties -con.tE#$lain $rocess ca$ability and $rocess ca$ability inde#E#$lain the conce$t si#-sig%aE#$lain the $rocess o" acce$tance sa%$ling and describe the use o" OC cures!escribe the challenges inherent in %easuring &uality in serice organi/ations Wiley 2010 40hree SQC CategoriesStatistical &uality control 1SQC23 the ter% used to describe the set o" statistical tools used by &uality $ro"essionals4 SQC enco%$asses three broad categories o"31. Statistical process control (SPC). Descripti!e statistics incl"de the %ean* standard deiation* and range'nole ins$ecting the out$ut "ro% a $rocessQuality characteristics are %easured and charted5el$s identi"y in-$rocess ariations#. $cceptance sampling used to rando%ly ins$ect a batch o" goods to deter%ine acce$tance6rejection!oes not hel$ to catch in-$rocess $roble%s Wiley 2010 7Sources o" 8ariation%ariation e&ists in all processes.%ariation can 'e categori(ed as either)Common or Random ca"ses o* !ariation+ or+ando% causes that )e cannot identi"y9naoidable* e:g: slight di(erences in $rocess ariables li;e dia%eter* )eight* serice ti%e* te%$erature$ssigna'le ca"ses o* !ariationCauses can be identi&ample) J $roduction %anager "or a tire co%$any has ins$ected the nu%ber o" de"ectie tires in