**Daily update | 30 June, 2022**

# StackExchange

#### How the variance measure the information about the data?

**Source:** stats**Views:** 194**Score:** 3**Tags:** variance pca

#### CLT for t-test with unequal sample size; one group < 30?

**Source:** stats**Views:** 28**Score:** 2**Tags:** t-test central-limit-theorem small-sample permutation-test

#### Does Cross Validation Reduces Underfitting

**Source:** stats**Views:** 37**Score:** 2**Tags:** regression machine-learning classification categorical-data cross-validation

#### Lagged variables, data leakage and machine learning

**Source:** stats**Views:** 14**Score:** 2**Tags:** machine-learning time-series random-forest lags data-leakage

#### When the type of test does not fit the research purpose

**Source:** stats**Views:** 219**Score:** 2**Tags:** hypothesis-testing logistic anova