Analysis of variance is a "signal flag" procedure.By this,we mean that it alerts the researcher to the fact that there are many differences that are statistically significant and it flags him or her to those differences which are most important,those which should be acted upon first.

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Analysis of variance (ANOVA) is a statistical method used to determine if there are significant differences between the means of three or more groups. It does not prioritize or flag which differences are most important; it only indicates whether any statistically significant differences exist.

Analysis of Variance Is a "Signal Flag" Procedure