**Daily update | 29 December, 2022**

# StackExchange

#### Why do we minimise a cost function instead of maximising an equivalent?

**Source:** stats**Views:** 354**Score:** 6**Tags:** machine-learning maximum-likelihood optimization gradient

#### How to perform a 2 sided binomial test with the alternative being larger

**Source:** stats**Views:** 61**Score:** 5**Tags:** hypothesis-testing binomial-distribution

#### Should the t-statistic (not data) be normally distributed for using the t-test?

**Source:** stats**Views:** 109**Score:** 3**Tags:** hypothesis-testing t-test t-distribution

#### Adding a variable with no relationship with $Y$ increases $R^2$

**Source:** stats**Views:** 71**Score:** 2**Tags:** regression multicollinearity covariance-matrix r-squared

#### How to handle COVID-19 data in a panel

**Source:** stats**Views:** 13**Score:** 2**Tags:** regression panel-data fixed-effects-model