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3_stats_review - Statistics Review Lecture 3 STAT 651:...

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Statistics Review Lecture 3 STAT 651: Survey Sampling Methods, Kaizar – p.1/12
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Lecture 3: Statistics Review Reading: Lohr Appendix A Probability Random Variables Expected Value Variance STAT 651: Survey Sampling Methods, Kaizar – p.2/12
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The Set-Up Remember the coin study. Consider just the first coin you chose. Drawing out one particular coin is an outcome . There were 50 possible outcomes. Any collection of outcomes is called an event . We usually denote an event with a capital letter near the beginning of the alphabet, like A or B. The collection of all possible events is called the sample space , and is denoted with a capital omega: Ω . STAT 651: Survey Sampling Methods, Kaizar – p.3/12
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More Set-Up Each outcome is associated with a probability , which you can think of as a long-run frequency of the outcome occurring. If each coin is equally likely to be drawn from the bag, then the probability of drawing any one particular coin would be 1/50. Denote the probability of some event A occurring by
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This note was uploaded on 07/26/2011 for the course STA 651 taught by Professor Kaizar during the Winter '11 term at Ohio State.

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3_stats_review - Statistics Review Lecture 3 STAT 651:...

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