Interactive Learning Tools: Introduction to Data Analysis and Econometrics

A collection of interactive simulations designed to build intuition for fundamental concepts in statistics and regression through visualization and experimentation.

Sampling Variation Simulator

Explore how randomness in sampling generates variation in sample statistics and discover why larger samples produce more stable estimates.

Central Limit Theorem Simulator

Explore how the distribution of sample averages becomes approximately normal as sample size increases, even when the underlying population is far from normal.

Confidence Interval Simulator

Visualize how confidence intervals are constructed and develop intuition for what it means for a 95% confidence interval to contain the true population value.

Population and Sample Regression Explorer

Visualize how the population regression line is determined by the joint distribution of two variables and how OLS estimates vary from sample to sample.