在自然界,有许多变量都服从正态分布.这种分布是处理大量偶然的数据中,找到它们之间的内在联系的武器.在教育实践中,反映出人的能力,智力一般也符合正态分布,如考试分数这种随机变量X,也符合正态分布. 目前教师对运用标准正态分布,处理评估学生成绩与操行等级还不熟悉.这种方法在计算器及计算机,被人们重视与普及基础上,越来 In nature, there are many variables that obey the normal distribution. This distribution is a weapon that deals with a large amount of accidental data and finds the inner relationship between them. In education practice, people’s ability is reflected and the intelligence is generally in accordance with the normality. Distributions, such as test scores, such as the random variable X, also conform to a normal distribution. At present, teachers are not familiar with the use of standard normal distribution, dealing with assessing student performance and pedagogical levels. This method has been valued by people in calculators and computers. On the basis of popularity, more and more