Statistical Inference II
summary
Defines hypothesis testing with controlled Type I error α and power as rejection probability, explains uniformly most powerful tests and the chi-square vs. max-norm tradeoff for high-dimensional sparse signals (root(2 log D) vs. root(D)), shows confidence sets as duals of tests, and derives the asymptotic distribution of the maximum likelihood estimator: sqrt(n)(θ̂−θ0) → Normal(0, I(θ0)^{-1}) where Fisher information I(θ) = Var(∂ log p/∂θ).
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chapters (13)
- 0:00Introduction to hypothesis
- 2:00Errors and significance levels
- 4:49Power of a test
- 7:31Uniformly most powerful test
- 11:05Multiple sampling and minimax
- 14:22Testing in high dimensions
- 18:45Confidence intervals basics
- 22:26Duality of tests and intervals
- 25:48Confidence interval optimality
- 30:59Duality examples and benefits
- 36:52Interpretation of intervals
- 40:25Maximum likelihood estimation
- 54:04Asymptotic distribution
