wtw·Software Engineer·Technical Phone Screen
Apr 2026
Interviewed for a quant engineer role at WTW, got a stats theory question that felt more like a probability exam than anything practical. Not a bad experience, just not what I expected.
- Given a normally distributed random variable X with mean mu and variance sigma squared, walk through how you standardize it. Derive the result, prove the transformed variable follows a standard normal distribution, and explain why standardization matters in practice.
“I knew the derivation cold so that part was fine.”