| Doing Stats |
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| Tier 1 Probability |
Tier 2 Descriptive Statistics |
Tier 3 Inferential Statistics |
| Random Events | Data Type | Sampling Distribution |
| Probability Axioms and Rules | Data Scope | Confindence Interval |
| Counting Rules | Data Shape | Hypotheses Testing |
| Discrete Variables and Probability Distibutions | Aggregate Statistics | Regression Model |
| Continuous Variables and Probability Distibutions | Exploratory Analysis | Forecasting |