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Statistics Randomness February 16, 2009 Reading Quiz 1. A simple random sample from a population is 2. One source of bias that arises when we try to take a simple random sample is Outline 1. Random processes (a) (b) (c) 2. Probability - proportion of occurrences in the long run 3. The language of probability (a) Outcome (b) Sample Space (c) Event (d) Probability Model 4. Notation: A is an event, P (A) is the probability of A 5. How do we assign numbers? Announcement: Stats help room is open this evening.