“The standard deviation is a measure of the dispersion of a set of numbers.” In this statement, “standard deviation” is not similar to ___. A. mean deviation B. variance C. coefficient of variation D. arithmetic mean 相关知识点: 试题来源: 解析 D。“standard deviation”是标准差...
A. variance B. spread C. mean D. median 相关知识点: 试题来源: 解析 B。本题主要考查对标准差概念的理解。标准差是衡量数据分散程度的指标,也就是spread。选项 A 方差与标准差不同;选项 C 均值不是标准差的含义;选项 D 中位数也与标准差无关。反馈 收藏 ...
解析 B。解析:标准差(standard deviation)是衡量数据离散程度(spread or dispersion of data)的统计量。它表示数据相对于均值的分散情况。均值是衡量数据中心位置(The central location of data)的一种方式。相关系数是衡量两个变量之间关系(The relationship between two variables)的统计量。
A. central tendency B. variability C. symmetry D. skewness 相关知识点: 试题来源: 解析 B。A 选项 central tendency 中心趋势。B 选项 variability 变异性,标准差是衡量数据离散程度,即变异性的指标,符合题意。C 选项 symmetry 对称性。D 选项 skewness 偏度。反馈 收藏 ...
美 英 na.【统】标准(偏)差 网络标准差 复数:standard deviations 权威英汉双解 英汉 英英 网络释义 standard-deviation n. 1. 标准差;标准偏差the amount by which measurements in a set vary from the average for the set 例句 释义: 全部,标准差...
Standard Deviation How Standard Deviation Works Standard deviation is a statistical measurement that is often used in finance, particularly in investing. When applied to the annual rate of return of an investment, it can provide information on that investment'shistorical volatility. This means that it...
Standard deviation is often deemed easier to interpret than variance because it is expressed in the same units as the random variable . For example, if is the height of an individual extracted at random from a population, measured in inches, then the deviation ...
The standard deviation is the square root of the variance. If the variance of a data set is 4, the standard deviation is ___. A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 B。解析:方差为 4,标准差是方差的平方根,即 2。反馈...
aA person to live,a person also can happy. 人也居住的,人罐头愉快。[translate] abacktesting requirements backtesting的要求[translate] a83 375 000 83 375 000[translate] astandard deviation is presented in Table 1. 标准偏差在表1被提出。[translate]...
A. All the data points are the same. B. The mean is zero. C. The data set is very large. D. The data set is randomly distributed. 相关知识点: 试题来源: 解析 A。解析:标准偏差为零意味着数据的离散程度为零,即所有数据点相同。B 选项,均值不一定为零;C 选项,数据量大小与此无关;D ...