Cardiovascular Disease The data in Table 1 are a sample of cholesterol levels taken from 24 hospital employees who were on a stan- dard American diet and who agreed to adopt a vegetarian diet for 1 month. Serum-cholesterol measure- ments were made before adopting the diet and 1 month after. Subject Before After Difference* 1 195 146 49 2 145 155 -10 3 205 178 27 4 159 146 13 5 244 208 36 6 166 147 19 7 250 202 48 8 236 215 21 9 192 184 8 10 224 208 11 238 206 12 197 169 13 169 182 14 158 127 15 151 149 16 197 178 17 180 161 18 222 187 19 168 176 20 168 145 21 167 154 22 161 153 23 178 137 41 24 137 125 12 *Before after. 1. Compute the mean change in cholesterol. 2. Compute the standard deviation of the change in cholesterol levels. 3. Compute the median change in cholesterol. 4. Construct a box plot of the cholesterol changes. 5. Comment on the symmetry of the distribution of change scores based on your answers to Problems 1 and 4. 6. Is the change in cholesterol levels leptokurtic? Support your answer. 7. Construct a frequency distribution table for the change in cholesterol levels. DO ONLY no. 5 16 32 28 -13 31 2 19 19 35 -8 23 13 8

Cardiovascular Disease The data in Table 1 are a sample of cholesterol levels taken from 24 hospital employees who were on a stan- dard American diet and who agreed to adopt a vegetarian diet for 1 month. Serum-cholesterol measure- ments were made before adopting the diet and 1 month after. Subject Before After Difference* 1 195 146 49 2 145 155 -10 3 205 178 27 4 159 146 13 5 244 208 36 6 166 147 19 7 250 202 48 8 236 215 21 9 192 184 8 10 224 208 11 238 206 12 197 169 13 169 182 14 158 127 15 151 149 16 197 178 17 180 161 18 222 187 19 168 176 20 168 145 21 167 154 22 161 153 23 178 137 41 24 137 125 12 *Before after. 1. Compute the mean change in cholesterol. 2. Compute the standard deviation of the change in cholesterol levels. 3. Compute the median change in cholesterol. 4. Construct a box plot of the cholesterol changes. 5. Comment on the symmetry of the distribution of change scores based on your answers to Problems 1 and 4. 6. Is the change in cholesterol levels leptokurtic? Support your answer. 7. Construct a frequency distribution table for the change in cholesterol levels. DO ONLY no. 5 16 32 28 -13 31 2 19 19 35 -8 23 13 8

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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