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Statistics Fundamentals
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Statistics Fundamentals

Probability, hypothesis testing, confidence intervals, and the stats DS interviewers ask about.

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easycltprobability

State the Central Limit Theorem in one sentence.

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Interview-style answer
  • For independent, identically distributed samples with finite mean mu and variance σ2\sigma^{2}, the sampling distribution of the mean approaches a normal distribution N(μ,  σ2  /  n)N(\mu, \;\sigma^{2}\; / \;n) as n grows, regardless of the underlying distribution.
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