Wednesday, August 18, 2010
Coke vs. Pepsi
My husband conducted an experiment to see if our friends could tell the difference between non-caffinated Coke and Pepsi. I feel obligated to publish the results before I throw them away. We had 9 participants, 4 male and 5 female, with ages ranging from 19 to 31. Each participant received a chance to taste Coke and Pepsi knowing what it was beforehand so they could familiarize themselves with the drinks. Each participant was given three unlabeled samples of one of six permutations of drink combinations (Coke Pepsi Pepsi, pcc, pcp, cpc, ppc, or ccp), determined by dice roll. Of the nine participants 4 (44%) correctly identified which one "didn't belong;" only two participants correctly identified the odd sample out as what it actually was. From the results it would appear that there is a significant but small difference between the two drinks, even when non-caffinated (do you really want me to do a t-test on 44%? Chance alone would be 33%). Further study would include more participants.