šŸ“Š Chapter 7: Sampling Distributions and Estimation

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  • šŸ“¢ Student Q&A

    Q1: Why do we divide by nāˆ’1 in the bootstrap SE formula?
    This uses sample standard deviation logic — dividing by nāˆ’1 makes it unbiased under resampling.
    Q2: Is MLE always the same as OLS in linear regression?
    Only when errors are normally distributed. Otherwise, MLE and OLS may differ.
    Q3: How many bootstrap samples are enough?
    Usually 1,000 or more gives stable SE estimates. But 100 is okay for teaching demos.
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