STAB22H3 Midterm: STAB22 Midterm 2011 Solutions
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STAB22H3 Full Course Notes
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If it is density, the sum of them should equal one. (d)wrong. Bar histogram for category and have space between categories: b. So the number is 49 0. 061 3. The percent of the sparrows had humerus bone length shorter than 17. 5: d (a) the lengths between 17 and 20 have di erent probability. So the variability of the former is more: a. The cumulative probability below 18. 5 is (0. 122 + 0. 163 + 0. 571)/(0. 122 + So the median is between 18. 5 and 19: c. Because if you add a number to all data, the variance of that data does not changes. The std dev is the square root of the variance, and does not change either. Suppose it is x, then (3 + 2 + 0. 4 + 3. 6 + 3. 7 + 3. 3 + 3 + 2. 9 + 3. 7)/10 = 3. 04. Because 4. 0 > 0. 4, we know the mean increases.
