Examples - ANOVA_1 - Sec 10.2 The completely randomized...

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Sec. 10.2 The completely randomized design Example One-way ANOVA Independent random samples of households in the four U.S. regions yielded the data on last year’s energy consumptions shown in the table below. At the 5% significance level, do the data provide evidence of a difference exists in mean energy consumption by households among the four U.S. regions? (Assume normal populations.) Northwest Midwest South West 15 17 11 10 10 12 7 12 13 18 9 8 14 13 13 7 13 15 9 12 Response variable : energy consumption Factor : (geographical) region Factor level : 4 levels (Northwest, Midwest, South and West) Treatment : level of factor Experimental unit : a household Observational experiment : The analyst does not control the location of a household
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Results for: Energy consumption.mtw One-way ANOVA: Northeast, Midwest, South, West Source DF SS MS F P Factor 3 97.50 32.50 6.32 0.005 Error 16 82.30 5.14 Total 19 179.80 S = 2.268 R-Sq = 54.23% R-Sq(adj) = 45.64% Individual 95% CIs For Mean Based on
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Examples - ANOVA_1 - Sec 10.2 The completely randomized...

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