# Variable not technically part of anova table but

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Unformatted text preview: variances variances The MS(B) and MS(W) are two sample The variances and that’s what we divide to find F. variances F = MS(B) / MS(W) For our data, F = 951.0 / 161.2 = 5.9 31 One-Way ANOVA One-Way Adding F to the table … Source SS df MS Between 1902 2 951.0 Within 3386 21 161.2 Total 5288 23 F p 229.9 5.9 32 One-Way ANOVA One-Way The F test is a right tail test The F test statistic has an F distribution The with df(B) numerator df and df(W) denominator df denominator The p-value is the area to the right of the The test statistic test P(F2,21 > 5.9) = 0.009 33 One-Way ANOVA One-Way Completing the table with the p­value Source SS df MS Between 1902 2 951.0 Within 3386 21 161.2 Total 5288 23 F p 229.9 5.9 0.009 34 One-Way ANOVA One-Way The p-value is 0.009, which is less than The the significance level of 0.05, so we reject the null hypothesis. the The null hypothesis is that the means of The the three rows in class were the same, but we reject that, so at least one row has a different mean. different 35 One-Way ANOVA One-Way There...
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## This note was uploaded on 02/25/2013 for the course STATS 104 taught by Professor Mrs during the Spring '13 term at Lahore University of Management Sciences.

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