对甲、乙的学习成绩进行抽样分析,各抽门功课,得到的观测值如下

对甲、乙的学习成绩进行抽样分析,各抽门功课,得到的观测值如下:

                  

问:甲、乙谁的平均成绩最好?谁的各门功课发展较平衡?

答案

甲的平均成绩较好,乙的各门功课发展较平衡


解析:

解:

∴ 甲的平均成绩较好,乙的各门功课发展较平衡

相关题目

George Orwell, ______ was Eric Arthur, wrote many political novels and essays. A
George Orwell, ______ was Eric Arthur, wrote many political novels and essays. A. the real name B. what his real name  C. his real name D. whose real name
 国务院发展研究中心企业研究所日前发布的《中国企业发展
 国务院发展研究中心企业研究所日前发布的《中国企业发展报告2012》认为2012年中国企业进入本世纪以来“最困难”时期。下列关于企业的说法正确的
如图所示,在水平地面上有A、B两个小物体,质量分别为mA=3.0
如图所示,在水平地面上有A、B两个小物体,质量分别为mA=3.00kg、mB=2.00kg,它们与地面间的动摩擦因数均为μ=0.1. A、B之间有一原长为L=15.0cm、劲度系数为
下列物质中属于酸的是() A.H2CO3  B.NaHCO3 C.P2O5  D.Ba(OH)2
下列物质中属于酸的是() A.H2CO3  B.NaHCO3 C.P2O5  D.Ba(OH)2
如果一个二元一次不等式组表示的平面区域是图中的阴影部
如果一个二元一次不等式组表示的平面区域是图中的阴影部分(包括边界),则这个不等式组是                    .        
There’s growing unrest among the poor and unemployed. The media points out tha
There’s growing unrest among the poor and unemployed. The media points out that it’s the government that should have a lot to ________. A. answer for   B. stand for  C. go for  D. care for  
Several years ago, well-known writer and editor Norman Cousins became very ill.
Several years ago, well-known writer and editor Norman Cousins became very ill. His body ached and he felt constantly tired. It was difficult for him to even __21__ around. His doctor told him that he
That tree, __________ branches are almost bare, is very old. A. whose     
That tree, __________ branches are almost bare, is very old. A. whose        B. of which        C. in which      D. on which

最新题目