descriptive_arm {aggTrees}

Descriptive Statistics by Treatment Arm

Description

Computes sample averages and standard deviations of the covariates across treatment arms.

Usage

descriptive_arm(X, D)

Arguments

X

Covariate matrix (no intercept).

D

Treatment assignment vector.

Details

Sample means and standard deviations across treatment arms are a first, useful insight to assess covariate balance.

Value

4xp array, storing the desired statistics.