Stata and econometrics
STATAverse
Browser-based Stata practice, visible data preparation, regression and repeated-sampling investigations.
Lab
Models for calculus, economics, statistics, and spatial analysis.
Open transport, regression, and spatial allocation tools
Spatial & 3D GIS overview → The spatial investment and LiDAR entries below, with the data type and limit of each.
Open → Spatial investment
National NMTC financing atlas
Observed New Markets Tax Credit financing across the United States: 8,439 projects and $71.019 billion in QLICI, 2001–2023 origination. Observed records, not outcomes.
LiDAR & 3D GIS
3D geospatial portfolio
Classified point clouds, building animations, reconstructed land and seabed surfaces, and an interactive terrain mesh.
Geospatial economics
Spatial Investment Lab
Compare investment locations in 3D, separate incentive offers from additional employment, and allocate a fixed budget using road-network access and distributional objectives.
Oceanographic visualization
Hidden Rivers
Compare depth-resolved current layers, real seafloor relief, and Tessera coastal embeddings in a 3D atlas.
Econometrics education
The seven classical assumptions of OLS
Break each classical assumption on purpose with a public-policy example and measure what it does to the estimate.
Statistics education
Distribution Lab
Compute probabilities for 19 distributions, build the t, chi-square and F from their components, find the power of a test, and fit models to a simulated department whose true processes are hidden.
Microeconomics education
Market Mechanics Lab
Move supply and demand, then apply taxes, subsidies, price ceilings, and price floors and watch prices, trade, and surplus change.
Interactive mathematics
Calculus in motion
Move probes, grow rectangles, and explore log rulers and contour maps to connect derivatives with changes you can see.
Macroeconomics education
Macroeconomics suite
Explore growth, generations, monetary policy, debt and dynamic optimization through live models, equations and worked exercises.
Geospatial exploration
St. Louis: a living spatial study
Explore downtown in 3D, inspect mapped buildings, and compare walking access from two places.
Place-based policy
NMTC coefficient decomposition
Compare the pooled rural gap, the mean within-CDE estimate, and the separate descriptive decomposition.
Statistics education
Least-squares sensitivity lab
Add, move, or remove observations while the OLS fit and robust uncertainty recompute together.
Teaching practice
Representation relay
Follow one quantitative relationship through words, a table, an equation, a graph, and an interpretation.