Root Cause Analysis Practice Cases

46 practice cases

• Sudden Surge in Uber Eats Delivery Partner Cancellations

  Uber Eats has observed a sudden 60% increase in delivery partner cancellations over the past week. Management is concerned about this spike and needs a diagnosis. You have access to delivery partner feedback and traffic data but are restricted from modifying partner incentives for the time being. Id

• Surprising Results in Duolingo's A/B Test on Language Learning Paths

  Duolingo recently rolled out an A/B test to simplify its language learning paths with the goal of improving the user completion rate. Surprisingly, while the completion rate increased by 15%, the daily active users (DAUs) dropped by 8%. Your task is to analyze these conflicting results. Do not propo

• Tesla's Autopilot Mode Update Causes Unexpected Increase in Manual Overrides

  Tesla recently released an update to its Autopilot driving mode, aiming to improve lane-keeping accuracy. However, the update coincided with a 15% increase in manual overrides performed by drivers. Determine the root cause of this regression. Do not propose solutions yet; focus on diagnosing why thi

• Zoom's User Engagement Drops After New Feature Launch

  After launching a new 'Virtual Background Effect' feature, Zoom has seen a 15% decrease in daily active users worldwide. Your task is to examine what might be causing this drop. Do not propose solutions yet; focus on diagnosing the root cause. Consider user segments, feature adoption rates, and any

• Meta's Daily Active Users Drop in Brazil - Internal or External Cause?

  Meta has observed a sudden 10% drop in daily active users (DAUs) in Brazil over the past month. The company's leadership team is unsure if this decrease is due to internal product changes or external factors such as competitor activities or regulatory changes. Identify whether the DAU decline is pri

• LinkedIn Job Applications Spike, but Recruiter Engagement Drops

  LinkedIn's latest A/B test shows that job applications through the platform increased by 25%, but recruiter engagement with applicants decreased by 10% over the same period. This unexpected result is puzzling, as higher application volumes typically lead to more recruiter activity. You have one data

• PayPal Transaction Volume Dip in Europe Investigation

  PayPal's transaction volume in Europe dropped by 10% in the last quarter. Your task is to diagnose the root cause of this decline. You have access to transaction data, user feedback, and competitor analysis but cannot implement any changes for the next month. Focus on identifying the most likely iss

• Discord A/B Test: Increased User Chats but Reduced Nitro Subscriptions

  Discord's recent A/B test reveals that while user chat interactions increased by 15%, there has been a 10% decrease in Nitro subscriptions. As a product manager, you need to understand what's happening before proposing any solutions. Do not suggest changes to subscription pricing yet. Your task is t

• Google Search Clicks Rise, But Ad CTR Falls - Analyze the Cause

  Google has observed a 15% increase in overall search query volume over the past month. Despite this, the click-through rate (CTR) for their ads has dropped by 7%. As a Google product manager, you're tasked with diagnosing this anomaly. Focus on understanding the discrepancy between increased search

• Twitter Engagement Spike with Ad Revenue Drop Analysis

  You've conducted an A/B test on Twitter, introducing a new timeline algorithm. The test results show a 30% increase in user engagement, but a 10% decrease in ad revenue. Without proposing changes, diagnose the potential causes of this anomaly. Focus on identifying the drivers and segments most affec

• Amazon Reviews Engagement Spike with Conversion Drop Analysis

  Amazon has observed an unexpected result from a recent A/B test: the engagement on product reviews has spiked by 30%, but the conversion rate for products with high-rated reviews has inexplicably fallen by 10%. This seems contradictory, as higher engagement usually correlates with higher conversions

• Netflix Sign-Ups Surge, But Watch Time Drops - What's Going On?

  Netflix recently conducted an A/B test on a new onboarding process. The test group saw a 30% increase in sign-ups, but paradoxically, average daily watch time per user dropped by 10%. You need to diagnose the root cause. Do not propose solutions yet; focus on identifying potential reasons for this a

• Peloton Rider Engagement Drop After UI Revamp

  Peloton recently released a major update to its exercise bike display interface, aiming to enhance user experience. However, two weeks post-launch, there has been an 18% drop in rider engagement measured by the average session duration. Do not propose feature changes yet. Instead, diagnose the root

• Spotify Playlist Engagement Drop Investigation

  Spotify has observed a 20% decrease in playlist engagement over the past two months. This trend is critical for user retention and ad revenue. You need to determine whether this decline is due to internal product issues or external factors like a competitor's new feature or seasonal trends. You have

• Pinterest Pin Sharing Drop Investigation

  Pinterest recently launched a new update to its mobile app that was supposed to improve the user interface. Instead, it seems to have caused a 15% decrease in pin sharing among users. You must diagnose the root cause of this decline. Focus on identifying the specific aspects of the update that could