首页
登录
职称英语
A group of 20 values has a mean of 85 and a median of 80. A different group of 3
A group of 20 values has a mean of 85 and a median of 80. A different group of 3
游客
2025-02-23
6
管理
问题
A group of 20 values has a mean of 85 and a median of 80. A different group of 30 values has a mean of 75 and a median of 72.
(a)What is the mean of the 50 values?
(b)What is the median of the 50 values?
选项
答案
(a)mean = 79
(b)The median cannot be determined from the information given.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3969953.html
相关试题推荐
InhowmanydifferentwayscanthelettersinthewordSTUDYbeordered?5!=120
Howmanydifferentfive-digitpositiveintegerscanbeformedusingthedigits1
Inadistributionof850differentmeasurements,xcentimetersisatthe73rdpe
Ifn=pqr,wherep,q,andrarethreedifferentprimenumbers,howmanydiffere
Thereare7positiveintegersinthelist.Themedianofthelistis10,andthe
Fourdifferentpersonswillbeselectedfrom2menand5womentoserveonacom
Themedianof21differentintegersis17.Whichofthefollowingistheleastp
Fivepairsofsocksareofdifferentcolor.Iftwosocksaretobeselectedatr
A是一个由5个不相同的正整数组成的集合,B是一个由4个不相同的正整数组成的集合,并且B是A的子集。问A、B的下面哪一个是不可能相同的?A、medianB、av
Ifxandyaredifferentprimenumbers,eachgreaterthan2,whichofthefollow
随机试题
Onedayin1848acarpenternamedMarshall,whoworkedinasawmillonthe
Whydomoreandmorepeopleinyourcountrywanttoownacar? InChina,carsa
______,amanwhoexpresseshimselfeffectivelyissuretosucceedmorerapidly
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasris
Icaught______oftheriverasthetrainpassedoverabridge.A、visionB、scene
Accordingtothenews,whatmaybesignificanceofthediscovery?[originaltext]
A.呼吸困难 B.通气不足 C.气体弥散障碍 D.动脉血氧饱和度降低 E
下冷静期届满后,募集机构从事基金销售推介业务以外的人员应当以( )等留痕方式进
男性20岁,发热寒战3天,体温39.5℃,胸部X线示右上肺大片阴影,痰涂片见较多
高压喷射灌浆凝结体形状如下图所示,其喷射形式为()。 A.旋喷 B.摆
最新回复
(
0
)