- questions ?
- Discuss homework.
- survey height histograms in Excel (and Mathematica) - a recipe
- discuss histogram
- Powerball? Megabucks?

- Test
- mean from given numbers
- standard deviation, differences between sigma and S
- z-score from a given value
- bar graphs, histograms, interpreting them
- percentile ranks
- probability distribution from histogram; other basic definitions

- Start discussion binomial distribution (chap 5), time allowing
- "bi" - system with 2 values
- p = probability of "success"
- q = 1- p = probablity of "failure"
- n = number of trials
- S = total number of successes
- example on pg 129: lung cancer patients
- C(n,m) = number of ways a subset of m things can be taken from a group of n

= "binomial coefficient"

= n!/( m! (n-m)! )

= number in Pascal's triangle - some examples from end of chap 5

Jim Mahoney
*(mahoney@marlboro.edu)*

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