CJUS K300 1nd Edition Lecture 18 Outline of Last Lecture I Matched Sample T Tests Outline of Current Lecture II ANOVA Current Lecture ANOVA Analysis of Variance Ho There are no differences among the 3 groups Hi The three groups do differ H 0 u 1 u2 u 3 H i u 1 u2 u3 Always just memorize this x 2 SStotal X 2 Total amount of variability in the whole data set x x 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 SS b d f b obt SS w d fw F 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 X ij the i indicates individual values the j indicates group values
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