Answer Statistics Questions for Spokeo DS Role Quiz
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This interview question evaluates statistical assumptions, formulas, estimation strategy, uncertainty, edge cases, and interpretation in a realistic interview setting. A strong answer for Answer Statistics Questions for Spokeo DS Role Quiz states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Scenario
Online HackerRank first round for Spokeo DS role – timed statistics quiz
Question
What are the expectation and variance of a Poisson(λ) distribution? 2) Given sample size n and population standard deviation σ, write the 95% confidence interval for the population mean. 3) When should a two-sample t-test be used instead of a z-test? 4) State the Central Limit Theorem and one practical implication of it. 5) Interpret a p-value of 0.03 in the context of hypothesis testing.
Hints
Focus on core formulas, distribution properties, and correct interpretation of statistical tests.
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