COMM 87 Lecture Notes - Lecture 14: Analysis Of Variance

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11 Apr 2018
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See i(cid:310) one iv (cid:462)ith more than t(cid:462)o le(cid:461)els and on dv measured at inter(cid:461)al or ratio le(cid:461)el o(cid:310) measurement (cid:529). Fill in ano(cid:461)a ta(cid:271)le to (cid:311)et o(cid:271)ser(cid:461)ed f (cid:461)alue (cid:529). Compare o(cid:271)ser(cid:461)ed f (cid:461)alue to (cid:272)riti(cid:272)al (cid:461)alue in f ta(cid:271)le. I(cid:310) o(cid:271)ser(cid:461)ed f > (cid:272)riti(cid:272)al (cid:461)alue, reje(cid:272)t h (cid:527) (cid:530). I(cid:310) (cid:637)si(cid:311). (cid:638) < . (cid:527)(cid:532), reje(cid:272)t h (cid:527) (cid:530). Con(cid:272)lude (cid:462)hether or not there are si(cid:311)ni(cid:310)i(cid:272)ant di(cid:310)(cid:310)eren(cid:272)es (cid:271)et(cid:462)een some (cid:311)roup means (cid:531). I(cid:310) h (cid:527) is reje(cid:272)ted, (cid:272)ondu(cid:272)t post ho(cid:272) tests on (cid:272)omputer to see (cid:462)hi(cid:272)h (cid:311)roup means di(cid:310)(cid:310)er or i(cid:310) doin(cid:311) (cid:271)(cid:468) hand, just (cid:637)e(cid:468)e(cid:271)all(cid:638) di(cid:310)(cid:310)eren(cid:272)es (cid:532). State (cid:468)our (cid:272)on(cid:272)lusion in (cid:462)ords, usin(cid:311) the (cid:461)aria(cid:271)le names in the ori(cid:311)inal resear(cid:272)h h(cid:468)pothesis. Multiple-(cid:310)a(cid:272)tor anova purpose: to test (cid:462)hether di(cid:310)(cid:310)eren(cid:272)es e(cid:467)ist (cid:271)et(cid:462)een more than t(cid:462)o means in (cid:310)a(cid:272)torial desi(cid:311)ns. More than one iv (cid:614)(cid:310)a(cid:272)tor(cid:615), ea(cid:272)h (cid:310)a(cid:272)tor has at least (cid:529) le(cid:461)els. Onl(cid:468) one dv, measured at the inter(cid:461)al or ratio le(cid:461)el o(cid:310) measurement.

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