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

admin2018-12-14 35

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://kaotiyun.com/show/E0kO777K

本试题收录于： GRE QUANTITATIVE题库GRE分类

GRE QUANTITATIVE

GRE

相关试题推荐

Expertssuggestusingadifferentpasswordforeverywebsiteyouvisit,andchangingthepasswordeveryfewmonths.Ittakestro
Hehasbeencalledthe"missinglink."Half-man,half-beast.Heissupposedtoliveinthehighestmountainintheworld-
Hehasbeencalledthe"missinglink."Half-man,half-beast.Heissupposedtoliveinthehighestmountainintheworld-
Inmakingmarketinvestigation,oneshould______.WhichofthefollowingstatementsisNOTtrue?
Englandisnotabigcountry:fromnorthtosouthandfromeasttowestitisonlyaboutthreehundredmilesacross.Butforas
Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinoursolarsystem.Inastatement,theCaliforniaInstitute
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsfro
Thesocialcostsofunemploymentgofarbeyondthewelfareandunemploymentpaymentsmadethegovernment.Unemploymentincreases
Jackboughtashirtbecauseitwasgoodinqualityand_________inprice.
Abletosurvivesubzerotemperatures,longperiodsofdarkness,anddayswithoutfood,theArcticwolfisclearlyavery______an

随机试题

由河北沧州、河间一带流行的木板大鼓发展而来的曲艺演唱形式是()。
名词的特性有性、数、格，_____、体、态是动词的特性。
全塑电缆接续长度及扣式接线子的排数应根据电缆对数、电缆直径及封合套管的规格等来确定。100对电缆接线子排数为4排。（）
明清时期，为了加强对土地的深度利用，提高亩产量，普遍采用()
当出现招标文件中的某项规定与标前会议之后招标人发给每位投标人的会议记录不一致时,应以()为准。
在计算经营阶段的现金流量时，通常假设开办费摊销发生在经营期第一年年末。()
1968年美国军备开支为(　)亿美元。哪一年美国的军备开支恰好是1978年的80%(　)
Obesity:theScourgeoftheWesternWorldObesityisrapidlybecominganewscourgeofthewesternworld,delegatesagreeda
【B1】【B4】
A、Theman’scarhittheothercarintheback.B、Theman’scarranintotheothercarheadon.C、Theman’scarjostledtheother

最新回复(0)

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

GRE QUANTITATIVE

GRE

Expertssuggestusingadifferentpasswordforeverywebsiteyouvisit,andchangingthepasswordeveryfewmonths.Ittakestro

Hehasbeencalledthe"missinglink."Half-man,half-beast.Heissupposedtoliveinthehighestmountainintheworld-

Hehasbeencalledthe"missinglink."Half-man,half-beast.Heissupposedtoliveinthehighestmountainintheworld-

Inmakingmarketinvestigation,oneshould______.WhichofthefollowingstatementsisNOTtrue?

Englandisnotabigcountry:fromnorthtosouthandfromeasttowestitisonlyaboutthreehundredmilesacross.Butforas

Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinoursolarsystem.Inastatement,theCaliforniaInstitute

Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsfro

Thesocialcostsofunemploymentgofarbeyondthewelfareandunemploymentpaymentsmadethegovernment.Unemploymentincreases

Jackboughtashirtbecauseitwasgoodinqualityand_________inprice.

Abletosurvivesubzerotemperatures,longperiodsofdarkness,anddayswithoutfood,theArcticwolfisclearlyavery______an

由河北沧州、河间一带流行的木板大鼓发展而来的曲艺演唱形式是()。

名词的特性有性、数、格，_____、体、态是动词的特性。

全塑电缆接续长度及扣式接线子的排数应根据电缆对数、电缆直径及封合套管的规格等来确定。100对电缆接线子排数为4排。（）

明清时期，为了加强对土地的深度利用，提高亩产量，普遍采用()

当出现招标文件中的某项规定与标前会议之后招标人发给每位投标人的会议记录不一致时,应以()为准。

在计算经营阶段的现金流量时，通常假设开办费摊销发生在经营期第一年年末。()

1968年美国军备开支为( )亿美元。哪一年美国的军备开支恰好是1978年的80%( )

Obesity:theScourgeoftheWesternWorldObesityisrapidlybecominganewscourgeofthewesternworld,delegatesagreeda

【B1】【B4】

A、Theman’scarhittheothercarintheback.B、Theman’scarranintotheothercarheadon.C、Theman’scarjostledtheother

1968年美国军备开支为(　)亿美元。哪一年美国的军备开支恰好是1978年的80%(　)