MATH 251, Probability and Statistics I, Fall 2001, Oct. 5, Day 16

Some types of samples:
Non-probability Samples
   Voluntary Response Sample
   Convenience Sample (not in text)--grab whatever individuals are handy.  Stats class.  Interview people in mall.
Probability Samples:
   SRS
   Systematic Random Sample
   Stratified Random Sample
   Multistage Sample

(All our  later theory will be for SRS; modifications need to be made for other probability samples)

Finish 3.3 (Sampling)  Read ahead, 3.4
Hand in: 
3.35 sample/pop
3.46
3.45 sampling frame
3.39 and 40  SRS
3.41 systematic
3.43 and 44 stratified		 Read, discuss
3.34 sample/pop
3.33
 		 Optional

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