LC8 Hypothesis testing & Computational alternatives
LC8 Hypothesis testing & Computational alternatives假设检验的定义与例子 • 假设检验的形式化定义：假设 $$\theta$$ 是我们感兴趣的未知参数， S 是所有可能的取值集合。我们将 S 分成两个互斥的子集 $$S_0$$ 和 $$S_1$$ ： • $$H_0 ： \theta \in S_0$$ （零假设），即我们最初...
LC3 Random variables and discrete probability distributions
LC3 Random variables and discrete probability distributionsRandom variableFormal definition of a random variable：A function mapping the sample space to the real line X : Function that maps outcomes...
LC 7. Confidence intervals and univariate hypothesis testing
LC 7. Confidence intervals and univariate hypothesis testingDescriptive statistics：Concerned with observed data: finding sample means, sample medians etc. Inferential statistics：Infers properties o...