首页
登录
职称英语
The incomplete table above shows a distribution of scores for a class of 25 stud
The incomplete table above shows a distribution of scores for a class of 25 stud
游客
2024-01-13
58
管理
问题
The incomplete table above shows a distribution of scores for a class of 25 students. If the average (arithmetic mean) score for the class is 83, what score is missing from the table?
选项
A、75
B、77
C、81
D、84
E、86
答案
A
解析
If the average score for the class is 83, then the sum of all 25 students’ scores be 83×25=2,075. The sum of the scores for the 22 students for whom we have scores is 368+546+581+355=1,850. So the three students’ scores must make up the difference between 2,075 and 1,850; 2,075-1,850=225; 225/3=75.
转载请注明原文地址:http://tihaiku.com/zcyy/3360310.html
相关试题推荐
TheMegaTekCorporationisdisplayingitsdistributionofemployeesbydepartmen
Theincompletetableaboveshowsadistributionofscoresforaclassof25stud
Asocietycanachieveafairdistributionofresourcesonlyunderconditionsof
ThedistributionofmasswithinthecoreoftheEarth,likethemantlethatsurr
DISTRIBUTIONOFTHEUNITEDSTATESPOPULATIONBYAGEANDSEX,1980AND1986[img]
COMPARISONOFTESTSCORESFORTWOCLASSES[img]ct_4image004[/img]ColumnA
Thedistributionofthenumbersofhoursthatstudentsatacertaincollegestud
DISTRIBUTIONOFWORKFORCEBYOCCUPATIONALCATEGORYFORREGIONYIN2001ANDPRO
Thetablebelowshowsthedistributionofagroupof40collegestudentsbygend
Foracertaindistribution,themeasurement12.1is1.5standarddeviationsbelo
随机试题
Theparty’sreducedvotewas______oflackofsupportforitspolicies.A、indica
Bystating"ThebusinessofAmericaisbusiness"PresidentCoolidgesuggeststha
Researchersinvestigatingbrainsizeandmentalabilitysaytheirworkoffer
[originaltext]M:Whereshallwegoforourholidaythisyear?W:Let’shavea
Inmanycountries,suchasFrance,Greece,andJapan,itisoftenmorediffi
下列微生物哪种不属于原核细胞型A.真菌 B.细菌 C.放线菌 D.支原体
一般在成本法下,资产的评估价值为( )。A、资产的重置成本 B、资产的重置成本
产妇,31岁,GP,停经34周,自述阴道流液2小时入院,无腹痛,以下说法不正确的
易引起急性间质性肾炎的常见药物为A.氨基糖苷类 B.非甾体类抗炎药 C.磺胺
甲公司持有一笔于2×16年7月1日从银行借入的五年期长期借款,下列关于该长
最新回复
(
0
)