the round-off error is within one standard deviation of the mean.均值mean=0 标准差standard deviation约等于2.8 .请问是0两边都加2.8还是整个区域内只有2. 相关知识点: 试题来源: 解析 standard deviation 是一个概念. 这个概念,说的是,这一组数据,有多么分散,或是聚拢. 在+/- 1σ 之内,68% ...
In a normal distribution, what percentage of data falls within one standard deviation of the mean? A. 34% B. 68% C. 95% D. 99.7% 相关知识点: 试题来源: 解析 B。在正态分布中,约 68%的数据落在均值加减一个标准差的范围内。反馈 收藏 ...
About ___% of the area is between z = -1 and z = 1 (or within 1 standard deviation of the mean). Standard Normal Distribution: The standard normal distribution is that normal distribution for which the mean is equal to zero and the standard deviation is e...
gre 数学题 请教In a normal distribution, 68% of the scores lie within one standard deviation of the mean. If the SAT scores of all the high school juniors in Center City followed a normal distribution with a mean of 500 and a standard deviation
A. (1990). The mean is within one standard deviation of any median. American Statistician, 44(4), 292.C. A. O ' C i n n e i d e, The mean is within one standard deviation of any median, Amer. Statist. 44 (1990), 292-293....
结果1 题目 In a normal distribution, 68% of the scores lie within one standard deviation of the mean. If the SAT scores of all the high school juniors in Center City followed a normal distribution with a mean of 500 and a standard deviation of 100, and if 10,200 students scored ...
According to the Empirical Rule, approximately ___% of the data in a normal distribution will fall within ±1 standard deviation of the mean. a. 34 b. 68 c. 95 d. 99.7 Empirical Rule: The empirical rule states that the pr...
within 1 standard deviation 就是平均数+-标准差*1
这是道数学问题意思是说分数或比数中大概有多少部分是在平均值(MEAN)的标差值(STANDARD DEVIATION)的范围内?因为我以前做的也是英文的中文的翻译可能有点没那么标准.相关推荐 1关于标准偏差的问题(英文)about what proportion of the scores are within two standard deviations of the mean?这句话是什么意思呀?反...
you’ve already calculated a sum of squares, which is part of the standard deviation formula. Sum of squares is a measure of how a data set varies around a central number (such as themean). You might realize by the phrase that you’re summing (adding up) squares—but squares of what...