Rolly Inc., a candy-maker and retailer, increases its candy prices by ten percent in one of its stores while retaining the existing prices in all its other stores. It then compares its sales in the test store to sales in the other stores. The information collected provides Rolly with evidence about the impact of price changes on Rolly's customers. The type of research used at Rolly Inc. best exemplifies _____.

Question

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The research design used by Rolly Inc. involves manipulating the price of its candy in one store to see how it affects sales, while keeping the prices constant in other stores. This is a classic example of experimental research, which involves manipulating one or more variables to study the effects of the manipulation on other variables. By changing only the price in one store, Rolly Inc. is isolating the effects of this manipulation on sales, and can compare these to sales in other stores to see if the price increase has a significant impact. Mathematical modeling, observational research, and survey research do not involve manipulating variables in the same way that experimental research does, so they are not the best choice to describe the type of research used by Rolly Inc.

Rolly Inc, a Candy-Maker and Retailer, Increases Its Candy Prices by by Ten