Interview Questions

George P. - "breakdown the questions from Top- Down or sum up from bottom-ip Identify KPI and North star metrics Identify and analyze cohorts and segments Transform data to actionable insights"See full answer

Katherine B. - "If we’re using an A/B test we have a few decision criteria that we can use to measure success. If our primary metric has been shown to be statistically significant (and our confidence interval does not cross 0), and the gaurdrail metrics that we created have not been negatively affected, we should consider shipping. If the our p-value is not significant we can still consider shipping beta if the guardrail metrics have not been negatively affected, and we weigh the opportunity cost of not shippin"See full answer

Anonymous Porcupine - "https://www.geeksforgeeks.org/find-local-minima-array/ I coded O(N) but after that gave a binary approach aswell. After that he also gave a varient of this problem in which, local minima means that the number is strictly less than its adjacent (we cannot do binary search there sample test case [1,1,1,1,1,1,0,1] or [1,0,1,1,1,1,1,1] using mid we cannot determine if the minima is on left or right). we have to do a linear search or find recursively."See full answer

Lucas G. - "I would conduct a sample z-test because we have enough samples and the population variance is known. H1: average monthly spending per user is $50 H0: average monthly spending per user is greater $50 One-sample z-test x_bar = $85 mu = $50 s = $20 n = 100 x_bar - mu / (s / sqrt(n) = 17.5 17.5 is the z-score that we will need to associate with its corresponding p-value. However, the z-score is very high, so the p-value will be very close to zero, which is much less than the standa"See full answer

Megha S. - "tried my best"See full answer

Sumit P. - "CQs: Swiggy? → instamart or food delivery → consider both Why do we want to increase AOV right now? Is it not at the desired level or exploration? → let’s say exploration Swiggy is a public company → goal is profit Biggest bite in profit is delivery cost hence delivery cost/unit revenue should be minimised Delivery cost = (fixed base cost + distance * x) * probability of spoil cases Can be done by Lowering delivery cost → seems challenging "See full answer