# practiceproblems - PADP 6950 Fertig Practice Problems for...

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Chapter 1 / Exercise 67
Elementary and Intermediate Algebra: Algebra Within Reach
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PADP 6950 Spring 2011 Fertig UGA Practice Problems for the Midterm 1. Explain the difference between sampling error and sampling bias. 2. To measure the center, why is the median sometimes preferred over the mean? Why is the mean sometimes preferred over the median? In each case, give an example with actual numbers to illustrate your answer.
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Chapter 1 / Exercise 67
Elementary and Intermediate Algebra: Algebra Within Reach
Larson Expert Verified
3. What is the difference between the standard deviation and the standard error? Explain using equations and words. 4. You plan to sample from the 30,000 students at UGA to compare the proportions of white students and black students who believe that the legal age for alcohol should be changed to 18. Explain how you would proceed if you want a systematic random sample of 100 students.
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