The right response is (A) is a within-subjects ANOVA.
To examine how different means differ from one another, analysis of variance is a collection of statistical models and the accompanying estimation techniques. Ronald Fisher, a statistician, created ANOVA.
By comparing the amount of variance inside each sample to the amount of variation across samples, an ANOVA is used to test for differences in population mean values. The idea that the means of two or more populations are equal is tested through variance analysis.
As is well known, one of the better types of ANOVA is between-sample ANOVA. Option A is the best choice because it states the difference between the independent groups using a continuous level of the different variables.
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