Onemain Financial Statistics & Math Interview Questions
Practice the exact questions companies are asking right now.
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Explain Type I vs Type II errors
Prompt In hypothesis testing: 1. Define Type I error and Type II error. 2. Explain how they relate to significance level \(\alpha\) and power \(1-\bet...
Detect and address multicollinearity
Prompt You fit a linear/logistic regression model and suspect multicollinearity among features. 1. What is multicollinearity and why is it a problem? ...
Differentiate and control Type I/II errors
A/B Test Powering and Error Control (Two-Proportion Z-Test) Context: You are planning a two-arm A/B test on sign-up conversion. The current baseline c...
Maximize Probability of Drawing Two Red Balls
Optimize Two-Basket Allocation for Red-Red Draws Setup You have 100 red balls and 100 blue balls to distribute between two baskets, A and B. Then you ...
Explain Type I and Type II Errors in Hypothesis Testing
Statistics Fundamentals: Type I vs Type II Errors and A/B Test Trade-offs Task You are discussing hypothesis testing in the context of a past modeling...