13.07.2015 Views

MULTIVARIJATNA ANALIZA VARIJANCE (One-Way MANOVA)

MULTIVARIJATNA ANALIZA VARIJANCE (One-Way MANOVA)

MULTIVARIJATNA ANALIZA VARIJANCE (One-Way MANOVA)

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Za opažanja se konstruira vektor y'=(9,6,9,0,2,3,1,2).SSSSSSSSobsmeantrres492122424(622422)42922421(20243)(2221)24(2233)1224221(122422)2(2241)2(22168 42)0222(101282)23422(3)23(2)278SSobsSSmean216 128 78SS10trSSresAko je nulta hipoteza istinita varijance izračunate izpribližno jednake. Iz relacije (4):SStri SSrestrebale bi bitix jx( xx)( xx)jslijedi:( x jx)( xx)( x jx)( x jx)2( xx)2( x jx)22( xx)(x jx)njnj11( x( x j jx)x)22njnj( x1( x1x)x)22njnj11( x( x j jxx))222( xnx)( xxj )j 1 0Nadalje, ako se obje strane jednadžbe sumiraju po :pn 1 j 1( x jx)Ukupna sumakvadrata (korigiranasuma kvadrata)SScorSS T2p 1n ( xx)Suma kvadrataodstupanja međuuzorcimaSStrSS B2pn 1 j 1( x jx )Suma kvadrataodstupanja unutaruzorakaSS2resSS W(5)ili:p n 1 j 122x ( n1n2 np)xjp 1n ( xx)2p n 1 j 1( x jx )2(6)15

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