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 ...
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...
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。
“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...
Beta coefficient is a measure of an investment’s systematic risk while the standard deviation is a measure of an investment’s total risk. In a portfolio of investments, beta coefficient is the appropriate risk measure because it only considers the undi
A. central tendency B. dispersion C. frequency D. correlation 相关知识点: 试题来源: 解析 B。本题考查统计学中标准偏差的概念。标准偏差是用来衡量数据的离散程度,即分散程度,选项 A 中心趋势通常由均值、中位数等表示;选项 C 频率指某个值出现的次数;选项 D 相关性用于描述两个变量之间的关系。反馈...
It is important to note that while standard deviation is a useful measure of risk, it is not the only measure that should be considered. Other factors, such as the expected return, the correlation with other investments in the portfolio, and the investor's risk tolerance, should also be tak...
While standard deviation is an important measure of investment risk, it is not the only one. There are many other measures investors can use to determine whether an asset is too risky for them—or not risky enough. Calculating Standard Deviation ...
Standard deviation measures the dispersion of a dataset relative to its mean. It is calculated as the square root of the variance. Standard deviation, in finance, is often used as a measure of the relative riskiness of an asset. A volatile stock has a high standard deviation, while the dev...
A. the spread of the data around the mean B. the total number of data points C. the highest value in the data set D. the lowest value in the data set 相关知识点: 试题来源: 解析 A。“standard deviation”是标准差的意思,衡量数据围绕均值的分散程度。B 选项是数据点的总数;C 选项是数据...