ANOVA SINGLE FACTORTukey Test for Differences SITUATION: • Sam!in" From # or more $ou!ations %ase& on a Sin"!e Factor • No common !ink 'et(een t)e k*t) o'ser+ation from $ou!ation , an& t)e k*t) o'ser+ation of $ou!ation -. or #. etc/ • 0ust )a+e same sam!e si1es from eac) ou!ation • 2a+e &etermine& t)at t)ere ARE &ifferences in t)e means 3UESTION: 4)ic) means &iffer from t)e ot)ers5 E6am!e: Can (e conc!u&e t)at t )ere are &ifferences in a+era"e 'attery !ife of 7 &ifferent tyes of note'ook comuter 'atteries5 An& if so. ()ic) ones &iffer from t)e ot)ers5 T)e St atistica! F*Te st: 2 8 : A 9 % 9 C 9 D 9 E 2 , : At !east one of t)ese ;s &oes not e<ua! t)e ot)ers Battery lives on the same type of co mputer6 were of Type A 6 were of Type B 6 were of Type C 6 were of Type D 6 were of Type E
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7/24/2019 ANOVA-Single Factor -- Tukey Test for Differences