Free Tools

ConceptDescription
Statistical Power Interactive Calculater

Statistical Power Interactive Calculater

Statistical-Power Interactive Calculator: Interactive calculator to illustrate the power of a statistical hypothesis test for a two-sided symmetrical test. This page shows how statistical power is related to the p-value and the significance level
Exploring Statistical Distributions

Exploring Statistical Distributions

Exploring Statistical Distributions: This app let you explore properties and shapes of some common statistical distributions.

3D Grapher

3D Grapher: This app makes 3D graphs of mathematical functions. You can either select a function from the list of functions provided, or enter your own function.

Distribution of Health Care Professions in the US

Distribution of Healthcare Professions by State: Curious about the distribution of healthcare professions by state, this app makes thematic maps of healthcare professions by state. The app uses data from the US government Bureau of Labor Statistics database. The app is far from completion but we are working on it.
Estimating Pi through Monte Carlo simulations

Estimating Pi through Monte Carlo simulations

Estimating Pi Through Monte Carlo simulations: Pi could be estimated by randomly simulating points inside a square of side 2r which completely encloses a circle of radius r. Pi is simply the ratio of the areas of the circle and the square multiplied by 4.
Simulating Correlated Variables

Simulating Correlated Variables

Simulating Correlated Variables: This app let you randomly simulate two variables with a correlation coefficient that yo u determine.
3D visualization of earthquakes.

3D visualization of earthquakes.

3D Visualization of Earthquakes: 3D visualization of earthquakes with magnitudes greater than 6 since January, 1, 2000.

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