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Unformatted text preview: Sample Exam I STAT 211 (Fall 2010) Name : Student ID : You have 75 minutes to complete this test. You may use the provided sheets, all appropriate tables (if any) and a calculator. If I provide partial resultsassume they are correct and use them even if they are not. If there is no correct answer or if multiple answers are correct, select the best answer. This test consists of 25 questions. Make sure you have all questions and Good luck! 1 1. Consider the data set: 17 1 2 4 4 8 1 0 7 11 12 8 1 What is the mean and median value of the data set? A. Mean is 0.1538, median is 0. B. Mean is 0, median is 0.1538. C. Mean is 5.8462, median is 4. D. Mean is 0.1538, median is 1. E. Mean is 5.8462, median is 0. 2. For the above data set, what is the range and variance? A. Range=[17, 12], var=8.0088. B. Range=[17, 12], var=64.1410. C. Range=[0, 12], var=64.1410. D. Range=[0, 17], var=64.1410. E. Range=[17, 12], var=29. 3. Which statement is not true? A. Mean is sensitive to outliers. B. Mean is more sensitive to outliers than median. C. Mean is less sensitive to outliers than median. D. A single extreme outlier cannot change the value of the median. E. All of the above. 4. A boxplot: A. Is difficult to do for large data sets. B. Is a descriptive method of organizing data. C. The original data set can be reconstructed. D. Can be used for categorical data sets. E. None of the above. 5. To describe variability, we can use A. interquartile range B. maximum C. median D. mean 2 E. none of the above 6. In a class, 40% of the students are from Bryan, 25% from College Station, the remaining are nonlocals. In addition, among the Bryan students, 55% are male, among the College Station students, 45% are male, and among the outoftowners, 50% are male.Station students, 45% are male, and among the outoftowners, 50% are male....
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This note was uploaded on 09/24/2011 for the course STAT 211 taught by Professor Parzen during the Spring '07 term at Texas A&M.
 Spring '07
 Parzen

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