16 Statistics - Mathematics(HKCEE M.C 20 Statistics(1997Q23 Pie Chart In the pie chart if x y z = 75 106 119 find x A 25 B 45 C 75 D 90 E 120(1997Q24

16 Statistics - Mathematics(HKCEE M.C 20 Statistics(1997Q23...

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Mathematics Mathematics (HKCEE (HKCEE M.C.) M.C.) 20 Statistics 20 Statistics (1997Q23) Pie Chart In the pie chart, if x : y : z = 75 : 106 : 119, find x . A. 25 B. 45 C. 75 D. 90 E. 120 (1997Q24) Histogram / Central Tendency The histogram below shows the distribution of the weights of 30 students. Find the mean weight of these students. A. 36.5 kg B. 38.5 kg C. 39 kg D. 39.5 kg E. 41.5 kg Mathematics / HKCEE M.C. / 20 Statistics / P.1 12 0 2 4 6 8 10 30 35 40 45 50 Total Government Revenue by Sources in a certain year Other Revenue y x z Indirect Taxes Direct Taxes
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(1998Q34) Cumulative Frequency Curve In the figure, C A and C B are the cumulative frequency curves of two distributions of weights A and B respectively. Which of the following is/are true? I. median of A > median of B II. range of A > range of B III. inter-quartile range of A > inter-quartile range of B A. I only B. I and II only C. I and III only D. II and III only E. I, II and III (1998Q51) Dispersion Find the mean deviation of the five numbers 2 x , x – 1, x , x + 1 and x + 2. A. x B. 0 C. 5 6 D. 2 E. 5 30 Mathematics / HKCEE M.C. / 20 Statistics / P.2
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(1999Q33) Central Tendency Find the median and mode of the ten numbers 6, 8, 3, 3, 5, 5, 5, 7, 7, 11 A. median = 5, mode = 5 B. median = 5, mode = 5.5 C. median = 5.5, mode = 5 D. median = 5.5, mode = 6 E. median = 6, mode = 5 (2000Q23) Central Tendency / Dispersion { x , x + 2, x + 4, x + 6, x + 8} and { x + 1, x + 3, x + 5, x + 7, x + 9} are two groups of numbers. Which of the following is/are true? I. The two groups of numbers have the same range. II. The two groups of numbers have the same standard deviation. III. The two groups of numbers have the same mean. A. I only B. II only C. III only D. I and II only E. I and III only (2000Q47) Dispersion The bar chart below shows the distribution of scores of a test. Find the mean deviation of the scores of the test. A. 0 mark B. 9 8 mark C. 3 2 2 mark D. 3 3 2 marks E. 5 6 marks Mathematics / HKCEE M.C. / 20 Statistics / P.3 1 2 3 4 5 0 5 10 15 20 score (marks) frequency
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(2001Q5) Frequency Distribution The bar chart below shows the distribution of scores in a test. Find the percentage of scores which are less than 3. A. 35% B. 40% C. 50% D. 65% E. 70% (2001Q21) Central Tendency If the mean of the ten numbers 8, 6, 6, 6, 7, 4, 10, 9, 9, x is 7, find the median of the ten numbers.
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