A marketing researcher was studying the effect of a supermarket display on sales of a new product. There were two designs for the display: the first had greater visual appeal and the second contained more factual information about the product. Each type of display could be made in three sizes: small, medium, or large. Eighteen supermarkets were available for the study, and three supermarkets were selected at random to display each combination of design and size. The number of units of the product sold over a two-week period was recorded for each supermarket. For the resulting data, a two-way ANOVA was run, with the partial ANOVA table given below. Analysis of variance for sales: Which statement best describes the type of experiment being run?
A)This is a two-factor experiment-each factor is at three levels.
B)This is a six-level experiment-each level has three observations.
C)This is a two-factor experiment-one factor is at two levels and the other factor is at three levels.
D)None of the answer options is correct.

Question

A marketing researcher was studying the effect of a supermarket display on sales of a new product. There were two designs for the display: the first had greater visual appeal and the second contained more factual information about the product. Each type of display could be made in three sizes: small, medium, or large. Eighteen supermarkets were available for the study, and three supermarkets were selected at random to display each combination of design and size. The number of units of the product sold over a two-week period was recorded for each supermarket. For the resulting data, a two-way ANOVA was run, with the partial ANOVA table given below. Analysis of variance for sales:  Which statement best describes the type of experiment being run?
A)This is a two-factor experiment-each factor is at three levels. 
B)This is a six-level experiment-each level has three observations. 
C)This is a two-factor experiment-one factor is at two levels and the other factor is at three levels. 
D)None of the answer options is correct.

Quizplus · Accepted Answer

The experiment has two factors: design and size of the display, and one factor has two levels (visual appeal vs factual information) while the other has three levels (small, medium, and large sizes). Therefore, the experiment is a two-factor experiment with one factor at two levels and the other factor at three levels.

A Marketing Researcher Was Studying the Effect of a Supermarket