商务统计考试重点.doc

【商务统计题型英译汉10×2汉译英10×2名词解释10×2计算40——概率、区间估计、假设检验、方差分析、简单线性回归 离散变量 Discrete variables produce numerical responses that arise from a counting process.离散变量产生数值反应,引起计数过程。 连续型变量 Continuous variables produce numerical responses that arise from a measuring process.连续变量产生数值反应,产生于一个测量过程。 统计量 A Statistics is a numerical measure that describes a characteristic of a sample.一个统计是一个数值,描述了一个特性的一个示例。 参数 A parameter is a numerical measure that describes a characteristic of a population.一个参数是一个数值,它描述了一个人口的特点。 总体 A population consists of all of the members of a group about which you want to draw a conclusion.一个人口包含所有的组的成员哪些你想得出一个结论。 样本 A sample is the portion of the population selected for analysis.一个示例是一部分人选择进行分析。 方差 (见29标准差的解释) Variance 变量 Variables are characteristics of items or individuals.变量是特征的物品或个人。 因变量 In regression analysis,the variable you wish to predict is called the dependent variable.在回归分析,变量你想预测称为因变量。 自变量 The variables used to make the prediction are called independent variable.使用的变量的预测被称为独立变量。 置信水平 confidence level:In general,the level of confidence is symbolized by (1-α)×100%,where αis the proportion in the tails of the distribution that is outside the confidence interval.置信水平:一般来说,信心水平象征由(1-α)×100%,这个比例在αis尾部的分布外的置信区间。 置信区间 Confidence interval:A confidence interval estimate is a range of numbers,called an interval,constructed around the point estimate.The confidence interval is constructed such that the probability the population parameter is located somewhere within the interval is known. 置信区间:置信区间估计是一个范围的数字,称为一个间隔,围绕点估计。置信区间是构建这样的几率总体参数是坐落在间隔是已知的。 二项分布 Binomial probability distribution:You use the binomial distribution when the discrete random variable of interest is the number of successes in a sample of n observations. P108----The binomial distribution has four essential properties.二项概率分布:你使用二项分布当离散随机变量的兴趣是成功的数量在一个示例的n的观察。　　P108——二项分布有四个基本性质。 单因素方差分析 P296下面一段 one-way analysis of variance(anova) 样本方差 P46公式 Sample variance is the sum