STAT1101S002
Columbia University
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Introduction to Statistics
- Class notes • 2 pages • 2024
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First Class Notes: Randomness 
 
Observation: Noting occurrences. 
Realization: Understanding outcomes. 
Sample Space: The set of all possible outcomes; subsets are events with assigned probabilities. 
Sources of Variability: Reasons for randomness due to different possibilities. 
Events: Specific outcomes or sets of outcomes. 
Probabilities: Likelihoods assigned to events. 
Union of Sets: Combining all elements from sets A and B. 
Intersection of Sets: Common elements in sets A and B. 
Empty Se...
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