In this experiment, our goal was to answer the question: “Is there a noticeable difference between a name-brand item and its competitor or ‘knock-off’ equivalent?” My partner, Deven, and I decided to base the experiment on two soft drinks: Dr. Pepper and Pibb Xtra. Our trials took place in Ms. Steely’s third block AP Statistics class, where each of her students were assigned a number and randomly selected through a random number generator.
We chose the matched pairs experimental design because our experiment only had two treatment conditions. The explanatory variable, or factor, was the soft drink, and the response variable was the preference of soda. The two levels of our experiment were Dr. Pepper and Pibb Xtra. A sample size of nine was
We chose the matched pairs experimental design because our experiment only had two treatment conditions. The explanatory variable, or factor, was the soft drink, and the response variable was the preference of soda. The two levels of our experiment were Dr. Pepper and Pibb Xtra. A sample size of nine was