Assignment 1 solution

Assignment 1 solution - (c) Mean = 8.864; Median = 8.954;...

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1 THE UNIVERSITY OF HONG KONG DEPARTMENT OF STATISTICS AND ACTUARIAL SCIENCE STAT0301 Elementary Statistical Methods Semester 1 200 9 /20 10 Assignment 1 Solution 2 . (a) Frequency: 10, 15, 22, 19, 14, 10 ( b ) Mean = 8.95 ; Median = 8.777 ; Mode = 8.15 ; SD = 4.477 Coefficient of variation = 0.5002 Skewness = 3(8.95-8.777)/4.477 = 11.57% 3. (a) Mean = 8.511; Median = 8.6; Mode = 7.4; Variance = 4.388; SD = 2.095 (b) Mean = 8.699; Median = 8.789; Mode = 7.563; SD = 2.141
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Unformatted text preview: (c) Mean = 8.864; Median = 8.954; Mode = 7.728; SD = 2.141 Coefficient of variation = 0.2415 Skewness = 3(8.95-8.777)/4.477 = -12.65% 5. (c) (i) 4104 (ii) 241 (iii) 1397(1369) 6. (a) Pete: 330 Hidy: 327 Pete (b) Pete: 2.89 Hidy: 3.32 Hidy (c) Must make sense 9. Mean: 64.26 SD: 11.74 10. Mean = -215; Median = -223; Mode = -227; SD = 28...
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