**Daily update | 28 August, 2022**

# StackExchange

#### Why null deviance is different from my manual calculations?

**Source:** stats**Views:** 115**Score:** 3**Tags:** r generalized-linear-model deviance

#### Differentiation on the conditional variables of a probability

**Source:** stats**Views:** 10**Score:** 2**Tags:** probability conditional-probability parameterization derivative

#### Why we do train/val/test split in ML models, but not in regularized linear regression?

**Source:** stats**Views:** 45**Score:** 2**Tags:** regression machine-learning cross-validation regularization

#### Best metrics to use in comparing a proportion estimate vs. the true proportion?

**Source:** stats**Views:** 15**Score:** 2**Tags:** proportion metric

#### Sparsity of connections in a CNN - why is it beneficial?

**Source:** stats**Views:** 6**Score:** 2**Tags:** neural-networks convolution