An electronics retailer was presented with in-store signage in two formats. Each branch of the store used the signage that matched its location. An analysis was performed to compare means on sales. Which type of variable do the sales represent?

The independent variable is the factor that is manipulated or categorized to observe its effect on another variable. In this scenario, the type of signage format used is the independent variable, as it is what the retailer controls to see how it affects sales. Therefore, sales cannot be classified as independent since they are not the manipulated factor.

While the term "criterion variable" can sometimes be synonymous with dependent variable, it is more commonly used in the context of studies aimed at predicting or measuring outcomes based on certain criteria. In this case, sales are indeed the outcome being measured, but the more precise label here is dependent variable due to its direct relationship with the independent variable.

Target variable is a term that can refer to the variable of interest in predictive modeling or research, but it is not a standard term used in experimental design to describe the relationship between variables. In this analysis, using the term dependent variable is more accurate since it emphasizes the relationship with the independent variable.