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Problem Set 02

# Problem Set 02 - 35-2015 Cooks Short Order 171,780 \$21,030...

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Institute for Policy Studies Fall 2011 Johns Hopkins University 195.605 Statistics for Policymaking Professor Giandrea Problem Set 2 Due at the beginning of class, September 14, 2011 1) A sample contains the values 23 28 31 33 33 42 15 23 24 19 22 30 26 27 18. a) Compute the mean and median. b) Compute the 10 th , 25 th , 50 th , 75 th , and 90 th percentiles. 2) The total employment and annual salary for each occupation classified under “Food Preparation and Serving Related Occupations” is given in the table below. a) Calculate the mean and median annual salary for these occupations. b) Calculate the weighted mean annual salary. Use employment as the weight. Occupation Code Occupation Title Employment Annual Salary 35-1011 Chefs and Head Cooks 90,510 \$44,780 35-1012 First-Line Supervisors of Food Preparation and Serving Workers 773,400 \$31,770 35-2011 Cooks, Fast Food 525,350 \$18,540 35-2012 Cooks, Institution and Cafeteria 387,700 \$24,180 35-2013 Cooks, Private Household 400 \$31,110 35-2014 Cooks, Restaurant 901,310 \$23,260 35-2015
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Unformatted text preview: 35-2015 Cooks, Short Order 171,780 \$21,030 35-2019 Cooks, All Other 19,460 \$24,590 35-2021 Food Preparation Workers 802,650 \$20,660 35-3011 Bartenders 495,350 \$21,310 35-3021 Combined Food Preparation and Serving Workers, Including Fast Food 2,692,170 \$18,610 35-3022 Counter Attendants, Cafeteria, Food Concession, and Coffee Shop 446,660 \$19,280 35-3031 Waiters and Waitresses 2,244,480 \$20,790 35-3041 Food Servers, Nonrestaurant 205,330 \$21,640 35-9011 Dining Room and Cafeteria Attendants and Bartender Helpers 390,920 \$19,320 35-9021 Dishwashers 505,950 \$18,680 35-9031 Hosts and Hostesses, Restaurant, Lounge, and Coffee Shop 329,020 \$19,600 35-9099 Food Preparation and Serving Related Workers, All Other 44,890 \$22,760 3) A sample contains the values 25 22 33 31 36 24 28 32 29 30. a) Compute the range, interquartile range, variance, and standard deviation for the sample. Problems from Anderson, Sweeney, and Williams, 5 th edition: Chapter 3: 25, 29, 46, 48...
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