A/B Testing

Experimentation and Data-Driven Decision Making in eCommerce

Simulation Statistics

Duration: 50 minutes

Modality: synchronous; in-class or remote learning

Author: Kartik Hosanagar & Alex Miller

Subject: Marketing, Strategy, Teamwork

Learner Level: Advanced High School, Undergraduate, Graduate, and Executive Education

Team Size: Individual Practice, 2-5 players/team during tournament

This simulation challenges users to design and analyze real-world experiments that drive data-driven marketing and product decisions. Through hands-on testing and competition, students develop practical intuition for experimentation, optimization, and the application of machine learning in business strategy.

Simulation Summary

A/B Testing places students in the role of Director of eCommerce at Nano, where they are tasked with a series of controlled online experiments to determine the best strategies for driving smartphone sales. Operating in a fast-moving digital environment, participants must decide how to test website features, ranging from layout changes to promotional strategies, all while weighing the tradeoff between acting quickly on limited data vs. waiting to collect more reliable information.

An image of a smartphone with a seascape on the screen. The text welcomes users to Nanophone, indicating it's poised to revolutionize the smartphone industry in emerging markets.
A/B Testing Player Welcome Page

The simulation unfolds across both an optional practice phase and a competitive tournament. As they design and run randomized experiments, participants must interpret performance and statistical data, continuously refining their optimization approach. Whether working independently or in teams, players experience the challenges of sequencing tests, allocating web traffic, and determining when results are actionable in the face of uncertainty.

As decisions compound, the simulation reveals how premature conclusions or overly cautious strategies can undermine performance, highlighting the importance of disciplined experimentation. Students begin to see how even small changes in test design or interpretation can significantly impact outcomes, mirroring the complexities faced by modern digital businesses. The experience also introduces how machine learning can be utilized to improve optimization, reinforcing the value of structured experimentation in data-rich environments.

Designed for flexible classroom and complexity settings, A/B Testing supports both synchronous and asynchronous play in different play modes and includes built-in analytics enabling instructors to review decisions, compare performance, and guide debrief discussions.

Developed by Professors Kartik Hosanagar and Alex Miller of the Operations, Information, & Decisions Department, this hands-on simulation offers a practical introduction to experimentation strategy, equipping students with the tools and mindset needed to make informed, evidence-based decisions in the ever-changing world of marketing and product development.

Gameplay Preview

An image of a smartphone with a seascape on the screen. The text welcomes users to Nanophone, indicating it's poised to revolutionize the smartphone industry in emerging markets.
Player Welcome Page
HBI Marketplace Listing
A dashboard displaying the results of a subgroup analysis for different test variants, featuring charts for conversion rate over time, profit per session, and traffic allocation. Numerical data and a statistical baseline are included.
Round Results Data
Faculty reports page
Player Experience
Screenshot displaying final results of a strategy evaluation. It features a pie chart showing a score of 70% and total profit of $1,428,651. Below are sections detailing strategies and potential profits, including highest possible profit, random strategy, and
Player Results Analysis

About the Authors

Headshot of a person wearing a brown blazer and blue shirt, smiling in front of a dark background.Kartik Hosanagar is the John C. Hower Professor of Technology and Digital Business and a Professor of Marketing at The Wharton School of the University of Pennsylvania. Kartik’s research work focuses on the digital economy, in particular the impact of AI on consumers and society, Internet media, Internet marketing, and e-commerce. Read more

Alex Miller

Alex Miller is a full-stack scientist and engineer with expertise in applied statistics, A/B testing, causal inference, and machine learning. As a former academic (Quant Marketing @ USC, Wharton PhD in Information Systems), he specialized in applying advanced statistical, econometric, and ML techniques to solve problems in personalized targeting, online experimentation, and recommendation systems. Read more.

Play Now!

Wharton affiliated?
Outside of Wharton?