**Daily update | 27 April, 2023**

# StackExchange

#### Can a variable be an instrument in the first stage and an exogenous covariate in the second stage of an 2SLS regression?

**Source:** stats**Views:** 20**Score:** 3**Tags:** regression instrumental-variables 2sls simultaneous-equation

#### Is this sample size big enough to analyze with Propensity Score Matching?

**Source:** stats**Views:** 68**Score:** 3**Tags:** regression logistic propensity-scores matching

#### Simple, intuitive example of non recursively enumerable languages

**Source:** cs**Views:** 28**Score:** 2**Tags:** computability turing-recognizable

#### How does a machine learning model distinguish between ordered discrete int and continuous int?

**Source:** stats**Views:** 31**Score:** 2**Tags:** logistic classification categorical-data continuous-data discrete-data

#### Do the # of weights (non-intercept coefficients) in logistic regression = # of features

**Source:** stats**Views:** 33**Score:** 1**Tags:** regression logistic classification sigmoid-curve