Interview Questions

Anonymous Aardvark - "in simple words, linear regression helps in predicting the value whereas logistics regression helps in predicting the binary classification. But lets talk through some example Linear regression model: E-commerce website pricing recommendation engine is built on linear regression model where we do have some variables such as competitor price, internal economics and consumer demand etc when we put this in a supervised learning model, it helps in predicting prices Logistics regression model"See full answer

Sriharsha K. - "I had this experience many a times. Normally underperformer is bottleneck to the team. Its not inly a unproductive person, it also choke other person's time who is try to help that person. I normally try to analyze reason for underperformance. It could be person in wrong place, he/she may need technical training, person may not be motivated for some reasons OR person has no potential. I had underperformer in my team who was not able to implement a design I suggested. Team lead was not able to c"See full answer

Mitchell K. - "How important are referrals? Do you need multiple vs. just one? Does it matter who refers you?"See full answer

Vishnu G. - "This is a classic strategic dilemma, but the answer for Walmart, given its core business model and strengths, is quite clear: Invest in boosting dish soap production. Here's why: Proven Success: Dish soap is Walmart's top product with strong, established sales. Scaling leverages existing, efficient supply chains and customer demand. Core Competency: Walmart excels at high-volume, low-margin household goods. This aligns perfectly with their business model and customer base. **L"See full answer

Praveen - "First, I would like to discuss and align what is meaningful social interaction. Given facebook's mission to empower users to build communities and get people closer, it is important that users have "meaningful social interaction" The goal of defining this metric is to use this as a north star or success metric around any efforts to increase engagement. It can also help with ads targeting/monetization by showing ads only during deeper interactions and hence might get better yield. Given faceb"See full answer

Anzhe M. - "It's a 2Sum question with duplicate array elements."See full answer

Sandeep K. - "Clarifying Questions Improve Netflix; Geography? India Vision - Becoming the best global entertainment distribution service Objective: Growth Engagement Retention I would focus on Growth because Highly growing adoption of internet increasing purchasing power in T2&T3 Indian consumers are constantly in need of finding new content to watch aligned with Netflix strategy of producing content for indian masses I believe Netflix has a really good immersive viewing/wathcing"See full answer

Srinivasa R. - "Any more details about this can make it easy"See full answer

Gabriel R. - "Thanks! First let me ask some clarifying questions: Do you mean mobile app? TV app? I will assume mobile and TV included. When I'm playing the role of the CEO, should I consider their current business' state? Yes I should. Is there a goal I should aim for as CEO? Yes we want to maximize retention on our app. My favorite 3 apps are: Google Translate Collectr Peloton I love these app because they help me out tremendously weekly! Google Translate is a free a"See full answer

Michael S. - "import string from collections import defaultdict def mostcommonwords(text): d = defaultdict(int) s = text.translate(str.maketrans('', '', string.punctuation)) for w in s.lower().split(): d[w] = d[w] + 1 return sorted(sorted(d.items()), reverse=True, key=lambda x: x[1]) `"See full answer

Srini K. - "performance issues and sudden spikes on input requests by scaling techniques and optimization."See full answer

Mc L. - "I believe human emotions can't be judged by number and hence I have always made mistakes while judging the outcome of a reaction by data."See full answer

P K. - "Redefining the question as: How will you solve the problem of misinformation on FB? Clarifying questions: Are we talking about building a product? (Up to you) What exactly is misinformation? (Fake news, inaccurate facts being shared on social media) Goal: Reduce the amount of misinformation spread on the platform and improve user trust. Key users associated with misinformation: News Accounts (eg CNN) - They may get involved in some controversy about a fake photoshopped artic"See full answer

Scott S. - " The Situation A few months ago, our trading platform started experiencing significant latency issues during peak trading hours. This latency was affecting our ability to process real-time market data and execute trades efficiently, potentially leading to substantial financial losses and missed opportunities. Identifying the Problem The first step was to identify the root cause of the latency. I organized a team meeting with our data engineers, DevOps, and network specialists to gather"See full answer

Ushita S. - "Video has audio disruption starting at ~7th minute, did not understand what law he was talking about. Can someone please clarify?"See full answer

Neha A. - "Start with FB vision What are local awareness ad. Ad content that is shown to people when they are in proximity to a brick and mortal stores. Why did fb start local awareness ads. They are very effective in helping businesses acquire customers, or create top of mind recall. Drive business revenue and visibility. Helps FB monetize and enables users discover local businesses. Goal – [secondary] is to ensure that we build visibility for the businesses. [Primary ] Customer engagement. engage the c"See full answer