某研究机构对儿童记忆能力和识图能力进行统计分析,得到如下数据

某研究机构对儿童记忆能力和识图能力进行统计分析,得到如下数据:

记忆能力

识图能力

由表中数据,求得线性回归方程为,,若某儿童的记忆能力为时,则他的识图能力约为

A.9.2               B.9.5               C.9.8            D.10

答案

B  

相关题目

解方程组:(1)                    (2)
解方程组:(1)                    (2)
如图1-7-9所示,静电计的指针和外壳分别与两块平行金属板相
如图1-7-9所示,静电计的指针和外壳分别与两块平行金属板相连接,使两个金属板带上等量的异种电荷,则: 图1-7-9(1)当向两板间插入电介质时,静电计
Spending a long time in front of the computer may cause headaches, eyestrain(
Spending a long time in front of the computer may cause headaches, eyestrain(眼睛疲劳)or other physical problems. Make sure that your child spends only one or two hours a day in front of a com
建设 “幸福中国”,必须打造“诚信中国”。阅读材料,回
建设 “幸福中国”,必须打造“诚信中国”。阅读材料,回答问题。 材料一  市场交易双方的诚信状况与各自获益状况关系表 (1)用经济生活知识解
       Between their crazy schedules and upside-down circadian(昼夜
       Between their crazy schedules and upside-down circadian(昼夜节律的) rhythms, teens have always been somewhat sleep-deprived(剥夺).Now technology is making it worse.
Though having lived abroad for years, many Chinese still _______ the traditional
Though having lived abroad for years, many Chinese still _______ the traditional customs. A.perform                  B.observe                   C.predict  
 从班委会5名成员中选出3名,分别担任班级学习委员、文娱
 从班委会5名成员中选出3名,分别担任班级学习委员、文娱委员与体育委员,其中甲、乙二人不能担任文娱委员,则不同的选法共有_____种。(用数字
 如果那么        .
 如果那么        .

最新题目