Snapchat Data Scientist Statistics & Math Interview Questions
Master your tech interview with our curated database of real questions from top companies.
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4 Questions 1 Company
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Snapchat
Medium
Data ScientistHow to Update Bayesian Model for Concept Drift?
Beta–Binomial CTR Model: Prior, Likelihood, Posterior, Smoothing, Intervals, and Drift Context You are discussing statistical foundations for a Bayesi...
Statistics & Math
62
0
Aug 4, 2025
Snapchat
Easy
Data ScientistCalculate Posterior Probability Using Bayes' Theorem Example
Bayes' Theorem Toy Problem: Spam-Flag Example Context You are evaluating a simple classifier that flags messages as spam. Based on historical data, yo...
Statistics & Math
18
0
Jul 12, 2025
Snapchat
Medium
Data ScientistCompute posterior spam risk from flags
A binary classifier flags spammy requesters. Last week the base rate of spam among all requesters was 12%. The classifier has true positive rate (TPR)...
Statistics & Math
0
0
Oct 13, 2025
Snapchat
Hard
Data ScientistDerive logistic regression and thresholds
Logistic Regression Deep Dive (Binary Classification) Assume a binary classification setting with observations {(x_i, y_i)} for i=1..n, where x_i ∈ R^...
Statistics & Math
0
0
Oct 13, 2025