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stat112 quiz-2-2

stat112 quiz-2-2 - Started on Monday 21 January 2008 11:45...

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Started on: Monday, 21 January 2008, 11:45 PM Completed on: Tuesday, 22 January 2008, 12:44 AM Time taken: 58 mins 36 secs Raw score: 5.5/10 (55%) Grade: 5.5 out of a maximum of 10 (1541) 1 Marks: 1 What does the IQR (inter quartile range) represent? Choose one answer. a. 2.5 times the inner quartile range is one step in the process to look for outliers. b. The inner quartile range is the same thing as the standard deviation except we only use it for skewed distributions. c. The inner quartile range are all the data points in the second and third quartiles. d. The inter quartile range is the range of the data that is contained between the first quartile and third quartile. Correct Marks for this submission: 1/1. (1802) 2 Marks: 1 A researcher wants to examine the relaitonship between mothers' level of education and their daughters' vocational aspirations in the rural communities of Illinois. She takes a random sample of 300 girls in their senior years from the rural areas of Illinois and asks them about their mothers' level of education and the career they want to pursue in the future. mother' s education is measured as: 1) less then high school. 2) high school, and 3 ) College Vocational aspiration is measured as: 1) no career or careers requiring high school diploma, 2) careers requiring two- year college, 3) careers requiring four- year college, and 4) careers requiring graduate work. In order to examine the relationship between mothers' level of education and daughters' career
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aspiration, which of the following data should she examine? Choose one answer. a. column frequency b. column percentages c. row frequencies d. total frequencies Incorrect Marks for this submission: 0/1. (1804) 3 Marks: 1 Given the following data: There are 100 subjects and for each subject you have two pieces of data including X and Y . Y equals to X plus 10 multiplied by 2. Given that , S(X) or standard deviation of X = 20, what is the best answer?
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