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# Anova analysis of variance method of testing equality

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Unformatted text preview: residuals is the smallest sum possible. One-Way ANOVA Procedure: Obtain P-value using computer or calculator. ANOVA (analysis of variance): Method of testing equality of three or more population means (by analyzing sample variances). Requirements: Populations have approximately normal distributions, populations have same variance s2, samples are simple random samples, and samples are independent. Decision criterion using significance level r : P-value … a: P-value 7 a: Reject null hypothesis of equal population means Fail to reject equality of population means. where test is right-tailed using x2 distribution with df = k - 1 and k number of samples Rank Correlation: Uses ranks to test for correlation from random paired data. rs: n: d: Rank correlation coefficient Number of pairs of sample data Difference between ranks for two values within a pair Goodness-of-Fit Goodness-of-Fit Test: Test the null hypothesis that an observed frequency distribution fits claimed distribution. O: Observed frequency E: Expected frequency k: Number of different...
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