1、GRE（ QUANTITATIVE）综合模拟试卷 12及答案与解析 0 The daily temperatures, in degrees Fahrenheit, for 10 days in May were 61, 62, 65, 65, 65, 68, 74, 74, 75, and 77. (a)Find the mean, median, mode, and range of the temperatures. (b)If each day had been 7 degrees warmer, what would have been the mean, median, mode,
2、 and range of those 10 temperatures? 2 The numbers of passengers on 9 airline flights were 22, 33, 21, 28, 22, 31, 44, 50, and 19. The standard deviation of these 9 numbers is approximately equal to 10.2. (a)Find the mean, median, mode, range, and interquartile range of the 9 numbers. (b)If each fli
3、ght had had 3 times as many passengers, what would have been the mean, median, mode, range, interquartile range, and standard deviation of the 9 numbers? (c)If each flight had had 2 fewer passengers, what would have been the interquartile range and standard deviation of the 9 numbers? 5 The circle w
4、ith center O below has radius 4. Find the following.(a)Circumference of the circle(b)Length of arc ABC(c)Area of the shaded region 8 The figure below shows two concentric circles, each with center O. Given that the larger circle has radius 12 and the smaller circle has radius 7, find the following.(
5、a)Circumference of the larger circle(b)Area of the smaller circle(c)Area of the shaded region 11 For the rectangular solid below, find the following.(a)Surface area of the solid(b)Length of diagonal AB GRE（ QUANTITATIVE）综合模拟试卷 12答案与解析 1 【正确答案】 In degrees Fahrenheit, the statistics are mean = 68.6, m
6、edian = 66.5, mode = 65, range = 16 2 【正确答案】 In degrees Fahrenheit, the statistics are mean = 75.6, median = 73.5, mode = 72, range = 16 3 【正确答案】 mean = 30, median = 28, mode = 22, range = 31, interquartile range = 17 4 【正确答案】 mean = 90, median = 84, mode = 66, range = 93, interquartile range = 51,standard deviation = 3 30.7 5 【正确答案】 interquartile range = 17, standard deviation10.2 6 【正确答案】 8 7 【正确答案】 8/9 8 【正确答案】 16/9 9 【正确答案】 24 10 【正确答案】 49 11 【正 确答案】 95 12 【正确答案】 208 13 【正确答案】 3
