**Daily update | 03 February, 2023**

# StackExchange

#### Dichotomising vs keeping categories in regression

**Source:** stats**Views:** 158**Score:** 6**Tags:** regression categorical-data binary-data

#### Why do the widths of confidence & prediction intervals change across a regression line - shouldn't it be the same with i.i.d?

**Source:** stats**Views:** 44**Score:** 3**Tags:** regression confidence-interval predictive-models

#### F-test decreases when adding variables

**Source:** stats**Views:** 37**Score:** 3**Tags:** regression f-test

#### Estimating the Absolute Difference in Mean Between Two Normal RVs

**Source:** stats**Views:** 12**Score:** 2**Tags:** mathematical-statistics inference bias-correction

#### (PCA) Is it possible for PCs loading scores to completely change sign after adding data?

**Source:** stats**Views:** 27**Score:** 2**Tags:** pca factor-analysis