How do I approach Statistics & Math interview questions?

Statistics & Math questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master statistics & math interviews.

What difficulty level is this interview question?

This is a medium difficulty Statistics & Math question, commonly asked during Onsite rounds at Spokeo.

What role is this question designed for?

This question is commonly asked for Data Scientist candidates at Spokeo during technical interviews.

Answer Statistics Questions for Spokeo DS Role Quiz

Last updated: Mar 29, 2026

Quick Overview

This question evaluates a candidate's understanding of core statistical concepts including probability distributions, confidence intervals, hypothesis testing, the Central Limit Theorem, and interpretation of p-values.

Spokeo

Aug 4, 2025, 10:55 AM

Data Scientist

Onsite

Statistics & Math

Timed Statistics Quiz: Short-Answer Concepts

Answer the following independent questions succinctly. Assume standard statistical definitions and that symbols have their usual meanings.

What are the expectation and variance of a Poisson(λ) distribution?
Given sample size n and known population standard deviation σ, write the 95% confidence interval for the population mean.
When should a two-sample t-test be used instead of a z-test?
State the Central Limit Theorem (CLT) and give one practical implication.
Interpret a p-value of 0.03 in the context of hypothesis testing.

Solution

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