STAT 2507A – June 22

STAT 2507A – June 22 - STAT2507AJune22...

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1 STAT 2507A – June 22 Jerry Situ 7.3-7.6 Summer 2009
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Exercise Which of the follow can be used to  make statistical inferences about the  education level of the Canadian  population? 1) A survey of ten university presidents 2) Admin records of accredited  universities 3) A random sample of Canadians 2
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Exercise Name a non-sampling error and explain  how it might potentially affect your  inference. 3
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SAMPLING DISTRIBUTION OF MEANS In a population of size  N , there are  N!/(n!(N-n)!)  samples of size  n The variation in sample means is known as  sampling variation The  sampling distribution of means  is the  distribution of the arithmetic means of all the  possible random samples of size  that could be  selected from a given population
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distribution of mean Derive the distributions mathematically. By simulation
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STAT 2507A – June 22 - STAT2507AJune22...

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