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
Each of the people in three groups gave a rating of Product X on a scale from 1 through 5. For each of the groups, the table abo
Each of the people in three groups gave a rating of Product X on a scale from 1 through 5. For each of the groups, the table abo
admin
2015-03-24
29
问题
Each of the people in three groups gave a rating of Product X on a scale from 1 through 5. For each of the groups, the table above shows the number of people in the group and the average(arithmetic mean)of their ratings. What is the average of the ratings of the product given by the 100 people in the three groups combined?
Give your answer to the nearest 0.1.
选项
答案
4.1
解析
For each of the three groups, the sum of the ratings given by the people in the group is equal to the number of people in the group times the average of their ratings. Therefore the sum of the ratings given by the 100 people in the three groups combined is 45(3.8)+ 25(4.6)+ 30(4.2), or 412, and the average of the 100 ratings is 412/100, or 4.12. Therefore, to the nearest 0.1, the correct answer is 4.1.
This explanation uses the following strategies.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
Strategy 4: Translate from a Figure to an Arithmetic or Algebraic Representation
转载请注明原文地址:https://kaotiyun.com/show/45kO777K
本试题收录于:
GRE QUANTITATIVE题库GRE分类
0
GRE QUANTITATIVE
GRE
相关试题推荐
Greenseaturtles(海龟)aretheworld’slargestspeciesofhard-shelledseaturtle.Whilemostindividualsweighabout136to181
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupunabletoseethestars.Theprimenightskyexistson
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeandgames;bothcanbeplayed,bothhaverules,andbot
WhenIwasyoung,Ispentmysummervacationsonmygrandparents’farm.ThesummerthatIgraduatedfromcollege,I【C1】______my
Thefactoryhadto______anumberofemployeesbecauseoftheeconomiccrisisinthecountry.
AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
Thecityhasalwaysbeenanengineofintellectuallife,fromthe10-centurycafesofLondon,wherecitizensgatheredtodiscuss
Thenumberofcollegegraduatesgoingintobusiness-relatedfieldshas______increased.
Amberworks20daysamonthatddollarsperdayformmonthsoutoftheyear.Whichofthefollowingrepresentshermonthlypay
Ifaninvestmenthasproducednoprofit,taxreliefpredicatedonhavingmadetheinvestmentisnohelp;anycorporatemanagerw
随机试题
不属于肿瘤一级预防的是()
有关放大摄影的叙述,错误的是
一般资料:李某,男性,26岁,无业。案例介绍:李某在母亲陪同下前来。其自小少言寡语,与人交往少,脾气暴躁。智力正常,孤独,生活懒散。一年前父亲病故时,李某还去网吧而且玩得兴致勃勃。最近几天经常笑。自述:和女友分手后,开始失眠,总感觉有人
________是中国第一部器乐合奏曲谱集,由清代蒙古族文人________所编。
婴幼儿由于眼球的生理特点,可能出现生理性远视,这一情况一般出现在3岁以前。()
1947年7月至9月,中国共产党召开了全国土地会议,制定和通过了《中国土地法大纲》,这是后期进行土地改革的政策依据。《中国土地法大纲》明确规定的土地政策和分配方案有
将Catalyst6500交换机的设备管理地址设置为203.29.166.9/24,缺省网关的IP地址为203.29.166.1,正确的配置语句是()
关系数据库管理系统能实现的专门关系运算包括()。
TheIdentificationofGoalsI.Introduction1)theimportanceofidentificationofgoalsforyourlifeandfuture2)twoquestions
U.S.ratesofdiseaseandsomecancers,【B1】______ofthebreast,areamongthehighestintheworld.Manyfactors【B2】______tocan
最新回复
(
0
)