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# Response Variable

Response variable: personal ratings (how a subject likes or dislikes a particular concentration of a solution on a scale from 1 to 10).

Independent variable 1: concentrations of a solution (5 levels: 5%,10%, 20%, 40%, 80%).

Independent variable 2: two groups of subjects: Group A (sample size 50), Group B(sample size 60).

I need to find out if the response is significantly different between group A and group B when people rate the five different concentrations.

Is ANOVA appropriate here? If yes, what would be df for main effects, interaction, error?
And what test can I use to make pairwise comparisons?

#### Solution Summary

The solution discusses a response variable: personal ratings (how a subject likes or dislikes a particular concentration of a solution on a scale from 1 to 10).

Independent variable 1: concentrations of a solution (5 levels: 5%,10%, 20%, 40%, 80%).

Independent variable 2: two groups of subjects: Group A (sample size 50), Group B(sample size 60).

I need to find out if the response is significantly different between group A and group B when people rate the five different concentrations.

Is ANOVA appropriate here? If yes, what would be df for main effects, interaction, error?
And what test can I use to make pairwise comparisons?

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