Clearly, the bacteria grow faster on Pepsi than on Coke. Overall, Coca-Cola continues to outsell Pepsi in almost all areas of the world. The first problem with the experiment was the population, the only students involved were the ones in Psychology 101 class, this is an easy fix, draw students from a larger population (for example: all Austin College students). The tasters will taste the drink and make a decision about whether they think it is Coke or Pepsi that they are drinking. HYPOTHESIS When it comes to the Coke vs. Pepsi challenge, I always prefer Coke. First, students discuss the results, being asked if they think any of the results suggest that a student is doing better than just guessing. They are asked what kind of data would be expected if they were just guessing. One of the strongest parts of the research design for the Coke vs. Pepsi experiment was the random assignment of the independent variable. The MythBusters Seem To Think So. These people may switch groups when the taste testing begins so they will not know the order of colas to be tested. Change ), You are commenting using your Facebook account. Good job Ashley. … It was a blind taste test to show people preferred Pepsi over Coke. On solid plates, the E. coli also formed larger colonies on the Pepsi medium than on the Coke medium (data not shown). Creative Commons license unless otherwise noted below. Describe any possible sources of confounding in the experiment. Click here for the Coke Versus Pepsi: Taste-Testing the Brands (Slideshow) Strangely enough, Coca-Cola and PepsiCo have been fighting over our tastebuds since the 19th century — literally. In class we conducted an experiment to see of certain students could taste the difference between Coke and Pepsi in random samples. Runners--those who run cups of cola from room to hall (blind to test). First, students are asked to consider how to design an experiment that will allow them to determine if anyone can correctly identify two different brands of cola in a blind taste test. This leads to simulating data for the situation of guessing (p = .5, n = 5 trials). In this taste test however I decided to not simply test whether or not a person could distinguish one cola brand from the other, but instead see if people with a preference could still distinguish a difference even if everyone around them was giving a different answer. What are 5 specific changes you would make to the research design to improve the study? Change ), You are commenting using your Twitter account. In the first stage of the activity students design and conduct the experiment. Hypothesis: I think that most people will be able to tell the difference between Coke and Pepsi. To learn to understand and recognize instances of experimental control. When it comes to Pepsi and Coke many people have a preference and most will be able to acknowledge the distinct taste difference. It Turns Out That 27 Might Be the Right Answer. Part I: Setting the Stage The following activity is a great way to “set the stage” on the first day of class and give your students an overview of what they’ll be studying during the year. Tasters--those who think they can tell the difference (blind to test). The Pepsi Challenge The Pepsi Challenge was a marketing campaign Pepsi introduced in 1975. Repeat the above process 4 more times for a total of 5 trials. Problem: Can you tell the difference between Coke and Pepsi? Psych Class or Buzzfeed? With your group, design a study that would determine if someone could actually tell the difference between Coke and Pepsi. The random assignment of Coke or Pepsi in each of the cups was done by flipping coin and pouring the corresponding drink for when it was heads or tails. ( Log Out /  The results were remarkable; people picked Pepsi over Coke by a significant margin. This study is neither the first nor the last word on Coke or Pepsi or letter preference. Media Project: How Many Emojis are Needed to Get Your Feelings Across? Recorders--they record results of tasters decisions about whether they are tasting Coke or Pepsi. Change ), This is a text widget. That idea was the Pepsi Challenge. ) But in 1975, Pepsi started a marketing campaign that gave Coke a run for its money: the “Pepsi Challenge,” a blind taste test showing more people preferred Pepsi over Coke. Score: 57. This activity was anonymously reviewed by educators with appropriate statistics background according Show terms of use for text on this page », Show terms of use for media on this page », This lesson plan and activity are based on material from the NSF-funded AIMS Project (Garfield, delMas and Zieffler, 2007). It also shows the amount of students that chose Pepsi or Coke. Another strength of the research design was the prevention of bias as a confounding factor by keeping the Fluid Dispensing and Randomization Team separate from the Data, Logistics, and Analyst Team. General Consensus: We had this cult cola going for the gold, but it petered … They found that, when the colas were tested anonymously, there was no preference between Coke and Pepsi, and brain areas concerned with perception and decision making were active. 10 Dixie cups per group for taste testing, 8 additional Dixie cups for clearing the palate, Coke and Pepsi (4 cans of each is enough for 8 groups), Coke/Pepsi pourer slips, where each group is given a random order of Coke and Pepsi over 10 trials, Sampling SIM software loaded on the computer or another simulation program or applet (see Available Technologies) Kingston Shops Milton Keynes, Flight School Academy, Easemytrip B2b Customer Care, Marketing Manager Responsibilities, How To Become A Marketing Manager, Chocolate Cupcake Images, Bath Spa University Ras Al Khaimah Fees,