首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The numbers in data set S have a standard deviation of If a new data set is formed by adding 3 to each number in S, what is the
The numbers in data set S have a standard deviation of If a new data set is formed by adding 3 to each number in S, what is the
admin
2014-08-13
24
问题
The numbers in data set S have a standard deviation of If a new data set is formed by adding 3 to each number in S, what is the standard deviation of the numbers in the new data set?
选项
A、2
B、3
C、5
D、8
E、15
答案
C
解析
Recall that the standard deviation of the numbers in a data set is a measure of the spread of the numbers about the mean of the numbers. The new data set is formed by adding the
same
number, 3, to
each
number in data set S. Thus, the mean of the numbers in the new data set is 3 more than the mean of the numbers in S, but the spread of the numbers in the new data set about the mean of the numbers in the new data set is the same as the spread of the numbers in S about the mean of the numbers in S. Because the standard deviation of the numbers in S is 5, the standard deviation of the numbers in the new data set is also 5. The correct answer is Choice C.
转载请注明原文地址:https://kaotiyun.com/show/V5kO777K
本试题收录于:
GRE QUANTITATIVE题库GRE分类
0
GRE QUANTITATIVE
GRE
相关试题推荐
Helookedbehindhimto______hewasnotbeingfollowed.
WehavequiteabitofinformationaboutancientEgyptianmedicine.Doctors’instructionshavebeenfoundtotellus【56】theydid
Mysterynovelssellthousandsofcopieseachyear.Andmany【C1】______countAgathaChristieamongtheirfavoriteauthors.Christi
Mysterynovelssellthousandsofcopieseachyear.Andmany【C1】______countAgathaChristieamongtheirfavoriteauthors.Christi
AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
(77)Muchunfriendlyfeelingtowardscomputershasbeenbasedonthefearofwidespreadunemploymentresultingfromtheirintrodu
Thecityhasalwaysbeenanengineofintellectuallife,fromthe10-centurycafesofLondon,wherecitizensgatheredtodiscuss
Evans:Ijustreceivedaletterfromoneofmyoldhighschoolbuddies.Danae:【D5】______Evans:Well,actuallyIhaven’t
Inthefigureabove,whatistheperimeterof△PQF?(1)ThelengthofsegmentPTis2.(2)ThelengthofsegmentRSis.
IstheperimeteroftriangleABCgreaterthan20?(1)BC-AC=10(2)theareaoftangleABCis20.
随机试题
【背景资料】某小区内拟建一座6层普通砖混结构住宅楼,外墙厚370mm,内墙厚240mm,抗震设防烈度7度。某施工单位于2011年5月与建设单位签订了该工程总承包合同。合同工程量清单报价中写明:瓷砖墙面积为1000m2,综合单价为110元/m
对控股企业的股权投资,应按以下哪种方法来确定评估值()
常用腧穴中天枢的位置是()
荆芥的气味广藿香的气味
为保证工程建筑物在施工、使用和运营中的安全,必须进行变形观测。建筑工程的变形观测包括裂缝观测和( )。
背景某消防工程,建筑面积24700mm2,地下一层,地上十五层。现浇钢筋混凝土框架结构,建设单位依法进行招标,投标报价执行《建设工程工程量清单计价规范》(GB50500一2008)。现有甲、乙、丙等8家单位参加了工程投标,经过公开开标、评标,最
错账更正时,划线更正法的适用范围是()。
试述弗里德曼的货币需求理论。(东北财经大学2013真题;东北财经大学2014真题)
[*]
"Lead(metal)"and"lead(dog’shead)"arespeltinthesameway,butpronounceddifferently.Thiskindofsenserelationiscall
最新回复
(
0
)