ANOVA

In many ways, comparing multiple sample means is simply an extension of what we covered last week. Just as we had 3 versions of the t-test (1 sample, 2 sample (with and without equal variance), and paired; we have several versions of ANOVA – single factor, factorial (called 2-factor with replication in Excel), and within-subjects (2-factor without replication in Excel). What examples (professional, personal, social) can you provide on when we might use each type? What would be the appropriate hypotheses statements for each example?

ANOVA

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ANOVA There are several versions of the ANOVA just like there are for the t-test. These include; the single factor, factorial/2-factor both with and without replication in Excel. I would use the Single factor version when dealing with BMI ratios of individuals at a particular weight loss programme with a continuous outcome measure of categories including underweight, overweight, normal and obese. The appropriate hypotheses statement for this would be that all the mean values obtained are equal (Balakrishnan, Kannan, & Nagaraja, 2005.) An example of a situation where I would use the 2-factor without replication in excel would be as a farmer doing an experiment to understand how the different blends of...