CJUS-K300 1nd Edition Lecture 18 Outline of Last Lecture I. Matched Sample T-TestsOutline of Current Lecture II. ANOVACurrent LectureANOVA – Analysis of VarianceHo: There are no differences among the 3 groupsHi: The three groups do differH0: u1= u2=u3 Hi: u1≠ u2≠ u3 Always, just memorize this!x∑¿¿¿2¿¿SStotal=∑X2−¿ (Total amount of variability in the whole data set)∑xx∑¿¿¿2¿¿∑(¿¿ij)nk−¿SSbetween=¿ (Variability between groups)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.SSwithin=SStotal−SSbetween (Variability within the groups)obt=¿SSbd . fbSSwd . fwF¿ ANOVA is to test for statistical significance among means by comparing levels of variance. ANOVA is concerned with inferences. The null and research hypotheses are always the same so just memorize those equations. SStotal will always have the greatest value so keep that in mind. If it is not the greatest of the 3 then you’ve done something wrong in the calculations. The tests will also always be 1 tailed to the right side. Xij the i indicates individual values, the j indicates group
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