About mxlabs
mxlabs is a practice platform for learning R programming and statistics. Instead of passive learning through lectures or textbooks, you learn by doing — writing real code to solve real problems.
How It Works
Each problem presents you with a dataset and a task. You write R code in the built-in editor to compute the answer. When you submit, your solution is validated instantly, and you can see how your performance compares to other learners.
Topics Covered
Descriptive Statistics
Mean, variance, covariance, correlation, percentiles, and more.
Regression & OLS
Simple and multiple regression, standard errors, confidence intervals, hypothesis testing.
Causal Inference
Difference-in-differences, matching, propensity scores, treatment effects.
Panel Data
Fixed effects, first differencing, and within-group estimation.
Difficulty Levels
Problems are tagged by difficulty so you can progress at your own pace: