【简答题】I am a strong believer that if a child is raised with approval, he learns to love himself and will be successful in his own way. Several weeks ago,I was doing homework with my son in the third grade a...
【简答题】某标准化考试的信度系数为 0.94 ,测验分数的方差为 15 分,求该测验的测量标准误,若的得分分别为 90.85,70 ,说明三人各可能出在什么分数区间 说明 :测量的标准误是指测验中所得测值偏离真分数的程度,记为 SE ,它与测验信度系数之间的关系定量表示为: SE = S x × ( 1− r xx ) 1/2 式中, SE 为测量的标准误, Sx 为 观察分数的标准差, rxx ...