Numerical Measures
Standard Deviation
Fig 1. Variations of the standard deviation formula.
Probability
Definitions
- Mutually Exclusive - Cannot happen at the same time
- Independent - One does not affect the other
- Sample Space - Set of all possible outcomes
- Event - One particular outcome
- "Statistical Experiments"
- Event A' - event not A
- A⋂B - (A intersection B) Represents all the outcomes in both A and B
- A⋃B - (A union B) Represents all the outcomes in A, B or both.
Fig 2. Venn diagrams showing the Intersection and Union of A B.
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