BIOL361 Lecture Notes - Lecture 12: Variance, Statistical Population, Homoscedasticity
24 Apr 2016
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Lecture 12 : analysis of variance i ( anova 1) Anova : ho : 1 = 2 = 3 h1: mean of at least 1 population is difference. Sample variances are used to measure differences between means. Tests the ho that all populations have identical means. Analyses the variance among values to measure differences among means. Treatment feed 1, feed 2, feed 3 and feed 4. Variable weight gain (kg) n = 20: we randomly assign pigs to feeds ( 5 pigs to each of the 4 feeds, 2. Anova test result: f= 1119. 1, p= 8. 5 x 10-19 , df= 3,16. 4 group means = k n = 20 values k- 1 = 3 n - k = 16. 4: subjects within each sample were obtained independently. 6. the different samples are from populations that are categorized in only 1 way ( according to 1 factor)
