09/07 Notes¶
1.4 Measures of Variability¶
- Examples
- Standard Deviations
- D = sqrt(D^2)
- Range
- Simple Varience
Fourth Spread¶
f_s = upper fourth - lower fourth
You have 50% of your data inbetween the upper and lower fourths
Homework: Chpt 1.4 - 44, 51, 55, 58
2.1 Sample Spaces and Events¶
A Sample Space of an expirement is all of the possible outcomes for that expirement
An Event is a subset of all the possible outcomes
- A Simple Event has only one outcomes
- A Compund Event has multiple outcomes
2.2 Axioms of Probability¶
- For any event, the probability is 0 or greater
- Total Probability is 1
- The sum of all events probability is 1
P(nullset) = 0
2.3 Counting Techniques¶
Look over Permuntations and Combinations in book