221x Filetype PPTX File size 0.66 MB Source: www.jcu.edu.sg
CONTENTS 1.What is a Chi-Square? 2.Types of Chi-Square Tests 3.A worked example on SPSS 4.Reporting a is t ha W i- Ch • A Ch i-Sq uar e i s a no ? n- re ua p q ara S met ri c t est tha t ca b n e u sed i f yo ur dat a n do ot ful fl a ss ump t i on r equ i r ement s t o con duc t a pa ra met ric t est • Chi - Squa r e t est s a r e a ls u o sed wh en a D V i s o r din a l or n omin a l Types of Chi-Square Tests 1 02 0 Goodness of Test of Fit Independence To assess if observed Used commonly to membership in a group evaluate if two nominal is different from variables are related expected membership es dn oo G f Fit o s The e JCU c l a fet p eri a t ea m m wa Exa i s nt er est ed t o fnd o ut i s f t udent s pr efer so me fa vo u o rs f Coca -Co l a over o t hers. T o t est th i s, t he st a ff of a dr i s nk t al l a sk e d 1 00 st u dent s o t f heir pr ef er r ed dri n k: Nor ma l co k e, Di et co k e, Co k e zer o, or V ani l l a co k e. More background info… ●In a Chi-Square analysis, we are assessing if there is a difference between an observed frequency and an expected frequency ●If students had no preference for any type of coke, we would expect to see roughly an equal number of 25 students in both observed and expected cells for each favour