首页
登录
职称英语
[img]2014m9x/ct_egreqj_egreqbj_0016_20148[/img] [br] BIn this problem you are as
[img]2014m9x/ct_egreqj_egreqbj_0016_20148[/img] [br] BIn this problem you are as
游客
2025-02-24
10
管理
问题
[br]
选项
答案
B
解析
In this problem you are asked to compare the average with the median of the 120 numbers in list Z. Since list Z consists of the numbers in lists X and Y combined, it is reasonable to try to use the information about lists X and Y to calculate the average and the median of the numbers in list Z.
To determine the average of the 120 numbers in list Z, you can use the information given about the individual averages of the numbers in lists X and Y. Because lists X and Y each contain 60 numbers, the average of the numbers in list Z is the average of the individual averages of the numbers in lists X and Y. Thus, the average of the numbers in list Z is
, or 4.9.
To determine the median of the 120 numbers in list Z, first note that list Z contains an even number of numbers, so the median of the numbers in list Z is the average of the middle two numbers when the numbers are listed in increasing order. If you look at the numbers in the two lists, you will see that the 60 numbers in list X are all less than or equal to 5, and the 60 numbers in list Y are all greater than or equal to 6. Thus, the two middle numbers in list Z are 5 and 6, and the average of these numbers is
, or 5.5. Therefore, the median of the numbers in list Z is 5.5, and this is greater than the average of 4.9. The correct answer is Choice B.
转载请注明原文地址:https://tihaiku.com/zcyy/3970409.html
相关试题推荐
If[img]2014m9x/ct_egreqj_egreqjs_0024_20148[/img]=1,whichofthefollowingsta
[img]2014m9x/ct_egreqj_egreqjs_0023_20148[/img]Thefigureaboveshowsthegraph
[img]2014m9x/ct_egreqj_egreqbj_0016_20148[/img][br]BInthisproblemyouareas
[img]2014m9x/ct_egreqj_egreqbj_0016_20148[/img][br]AInthisquestionyouareg
Usetherulesofexponentstosimplifythefollowing.[img]2014m9x/ct_egreqj_egr
Usetherulesofexponentstosimplifythefollowing.[img]2014m9x/ct_egreqj_egr
Usetherulesofexponentstosimplifythefollowing.[img]2014m9x/ct_egreqj_egr
Usetherulesofexponentstosimplifythefollowing.[img]2014m9x/ct_egreqj_egr
Usetherulesofexponentstosimplifythefollowing.[img]2014m9x/ct_egreqj_egr
Ifthefunctiongisdefinedforallnonzeronumbersybyg(y)=[img]2014m9x/ct_e
随机试题
Eachyear,millionsofpeopleinBangladeshdrinkgroundwaterthathasbeen
[originaltext]W:Bob,lookatallthebeautifulclothesdisplayedinthewindow
关于能源互联网建设,以下正确的是()。A.能源网架方面,能源互联网技术全面
以下各体液中,属于机体内环境的是A、胆汁 B、胰液 C、尿液 D、脑脊液
一氧化碳中毒的特征性表现是A、头痛,头晕 B、血液COHb测定阳性 C、昏迷
合成洗涤剂、杀虫剂、病原微生物等污染属于( )。A.工业污染源 B.
(2017年真题)下列关于家庭衰老期的表述,正确的有()。A.养老护理和资
下列关于政府会计中的净资产表述正确的有()。A.净资产是指政府会计主体资产扣除
处置采用成本模式计量的投资性房地产时,与处置固定资产和无形资产的核算方法相同,其
(2021年第2批真题)关于工程质量检测的说法,正确的是()。A.检测机构应
最新回复
(
0
)