GRE考试

【单选题】 HOUSEHOLD、DISCRETIONARY INCOME、BY HEAD
OF HOUSEHOLDSAGE-GROUP
Head of Household’s
Age-Group(in years) Number of Households
(in thousands)with
Discretionary Income Percent of Households
with discretionary
Income Average*
Household Average*
Discretionary Income
per Household 15 to 24
25 to 29
30 to 34
35 to 39
40 to 44
45 to 49
50 to 54
55 to 59
60 to 64
65 to 69
70 and older 972
2，646
3，41 9
3，31 9
2，605
2，299
2，008
2，252
1，848
1，523
2，946 18.7%
27.4
31.5
33.0
30.5
33.4
31.8
35.0
28.8
25.0
22.8 $30，124
36，618
40，067
43，585
47，891
49，968
49,079
44，906
44，262
38，968
32，344 $7，790
9.130
10.919
12.405
13.999
14.448
13.550
14. 584
14.356
12.921
11.015 All age Groups 25，869 28.9% $4l，940 $12，332*Based on households with discretionary income．
Which of the following statements can be inferred from the data
ⅠEach household in the age—group 15 to24 had at least $7，500 in discretionary income．
Ⅱ Of the age groups listed，the age—group55 to 59 had the greatest percent of households with discretionary income．
Ⅲ For the age—group 50 to 54，average discretionary income per household was less than one—fourth of the average household income．
A、Ⅱ only

B、Ⅲ only
C、Ⅰ and Ⅱ only
D、Ⅱ and Ⅲ only
E、Ⅰ，Ⅱ，and Ⅲ
网考网参考答案：A
网考网解析：
从表中数据能推出下列哪项陈述 Ⅰ每一个位于15至24岁年龄组的家庭至少都有$7，500的自由收入。 Ⅱ 在列出的年龄组中，55至59岁年龄组有自由收入的家庭比例最大。 Ⅲ 对50至54岁年龄组，每户平均的自由收入少于每户平均收入的1/4。 由表中的数据可知，15至24年龄组的家庭平均自由收入为$7，790，但这不能表明任一家庭的平均自由收入都超过$7，790；对于Ⅱ，从表中可以查到比例35%是最高的，这一值对应于55至59岁年龄组；而对于50至54年龄组．每户平均收入为$49，079，平均自由收入为$13，550，大于每人收入的[*]，因此Ⅲ不正确。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>