Simulation Laboratory
Change the evidence. Reconsider the decision.
Each environment begins with a practical question. Adjust the data, read the linked statistics and graphics, then decide what the evidence supports.
1 · Frame2 · Explore3 · Interpret4 · Decide
How to use this laboratoryYou do not need to read everything first. Choose an environment and start with the highlighted control.
- FrameUnderstand the question and decision.
- ExploreChange one input and watch the evidence respond.
- InterpretConnect the graph with the statistic.
- DecideChoose an action and check your reasoning.
Describing Data and Distribution Shape
What can an average hide when a decision also depends on variability, outliers, and shape?
Mean · median · SD · IQR · histogram · boxplot · decisions → ENVIRONMENT 02Relationships and Prediction
When does a visible relationship support a useful prediction, and when can one point mislead?
Scatterplots · correlation · regression · residuals → ENVIRONMENT 03Unions, Overlaps and Conditions
Who is affected by either event, and when does one event change the risk of another?
Union · intersection · conditional probability · independence → ENVIRONMENT 04Random Variables and Distributions
How do repeated uncertain outcomes form a distribution that supports planning?
Expected value · variance · binomial · simulation →