首页
登录
职称英语
What is the standard deviation of the three numbers x+5, y+5, z+5?(1)The standa
What is the standard deviation of the three numbers x+5, y+5, z+5?(1)The standa
游客
2025-02-27
9
管理
问题
What is the standard deviation of the three numbers x+5, y+5, z+5?
(1)The standard deviation of x and y is greater than 0.3.
(2)The standard deviation of x, y and z equals to 0.2.
选项
A、Statement (1) ALONE is sufficient, but statement (18) alone is not sufficient to answer the question asked.
B、Statement (2) ALONE is sufficient, but statement (17) alone is not sufficient to answer the question asked.
C、BOTH statement (1) and (18) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient to answer the question asked.
E、Statement (1) and(18)TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
答案
B
解析
此题考查对标准方差性质的理解。当数列中的每一个数都加上一个常数,那么新产生的数列的标准方差和原数列的标准方差相等。所以很容易得到B为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3974579.html
相关试题推荐
Whatisthestandarddeviationofthethreenumbersx+5,y+5,z+5?(1)Thestanda
在一个有n个数的序列中,数15比序列的median少了1.5个deviation,数22比median多了2个deviation,求这个序列的median。A、
Forallrealnumbersx,theoperationx*isdefinedbytheequationx*=x+4,If(
WhichofthefollowingnumbersisNOTthesumofthreeconsecutiveoddintegers?
Whichofthefollowingcannotbeexpressedasthesumoftwoprimenumbers?A、21
Computeroperatingsystemsoftwarehasbecomeincreasinglystandardized.Butwhe
Unlikeinothertransportationindustries,therearenominimumstandardssetby
From1965on,Yugoslavia’sstandardoflivinghassoared,butunemploymentandp
ALaborDepartmentstudystatesthatthenumbersofwomenemployedoutsidetheh
Althoughnumbersofanimalsinagivenregionmayfluctuatefromyeartoyea
随机试题
下列不属于个人歧视的是( )。A.雇主歧视 B.客户歧视 C.员工歧视
关于串联和并联环节的等效传递函数,正确的是( )。A.串联环节的等效传递函数
土地使用期限审核是指土地权利人以出让或转让方式取得的国有土地使用权的,其使用期限
在网络管理中,使用displayportvlan命令可查看交换机的( )信息,
一般骨髓象检查计数()有核细胞A.400 B.300 C.200
可促进醛固酮分泌的因素是A.血管紧张素Ⅱ增多 B. C. D.血量增多
简述学前儿童判断发展的趋势。
某公司拖欠2019年度增值税42万元,催缴无效,经县级税务局局长批准,2020年
(2012年真题)下列有关期后事项审计的说法中,正确的有( )。A.期后事项是
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)