**Daily update | 26 August, 2022**

# StackExchange

#### Why Hotelling's $T^2$ is taught in the book but it is not used anywhere so far?

**Source:** stats**Views:** 36**Score:** 3**Tags:** hypothesis-testing multiple-regression anova multivariate-analysis hotelling-t2

#### Difference between measuring rates as $E(X/Y)$ vs. $E(X)/E(Y)$?

**Source:** stats**Views:** 36**Score:** 2**Tags:** expected-value difference-in-difference

#### How do Sparsity Priors help for Identifiability?

**Source:** stats**Views:** 18**Score:** 2**Tags:** bayesian factor-analysis prior sparse identifiability

#### Maximize enclosed area of given figures on 2d grid

**Source:** cs**Views:** 15**Score:** 2**Tags:** algorithms optimization linear-programming square-grid tiling

#### PPV/TPR equivalent for negative results

**Source:** datascience**Views:** 17**Score:** 1**Tags:** machine-learning