What are the indicators for using an ANOVA? Create a research scenario in which it would be correct to use an ANOVA, including the research question, sample size, and dependent and independent variables.
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when there are 3 or more groups, i use ANOVA to test if there is any significant difference in their means.
suppose i want to test if there is any significant mean difference in the heights of high school, graduates and post graduates. i apply on e way anova. here dependent variable is height. independent variables are three groups of high school, graduates and post graduates. here null hypothesis is that there is no significant difference in the mean heights of high school, graduates and post graduates. this is tested against the alternative hypothesis h1: at least one of the mean heights of high school, graduates and post graduates differs significantly. here i collect 15 students from each group.