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...
A. Nothing B. Standard deviation tells you if the estimate is accurate C. Standard deviation tells you how unsure the estimate is D. Standard deviation tells you if the E. stimate includes a pad 相关知识点: 试题来源: 解析 C 标准差和风险有何关系? A. 没有关系 B. 标准差告诉你估算是否...
Standard Deviation Variance What Is It? The square root of the variance The average of the squared differences from the mean What Does It Indicate? The spread between numbers in a data set The average degree to which each point differs from the mean How Is It Expressed? The same as the ...
What Does Standard Deviation Mean? Contents[show] What is the definition of standard deviation?Standard Deviation is a statistical tool that is used widely by statisticians, economists, financial investors, mathematicians, and government officials. It allows these experts to see how variable a collectio...
A. The data is widely spread. B. The data is closely clustered. C. The data is randomly distributed. D. The data is not reliable. 相关知识点: 试题来源: 解析 B。本题考查“standard deviation(标准差)”的概念理解。统计数据显示数据的标准差很小,这意味着数据紧密聚集,A 数据广泛分布,C 数据...
Drawbacks of Standard Deviation Measurement Even as an assessment of the risks associated with a mutual fund, standard deviation is not a standalone answer. For example, standard deviation only shows the consistency (or inconsistency) of the fund's returns. It does not show how well the fund ...
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 选项,不是随机分布。反馈 收藏 ...
If a data set has a large range but a small standard deviation, what can be concluded? A. The data is highly variable. B. The data is evenly distributed. C. The data has outliers. D. The data is relatively consistent E. xcept F. or a few extreme values. ...
A. The data is closely clustered around the mean B. The data is widely spread out from the mean C. The data has a small range D. The data has a high median 相关知识点: 试题来源: 解析 B。如果一组数据的标准差很大,说明数据离均值比较分散。A 选项是数据紧密围绕均值;C 选项是数据极差小...
What is the standard deviation of a portfolio if you invest 30% in stock one (standard deviation of 4.6%) and 70% in stock two (standard deviation of 7.8%) if the correlation coefficient for the two stocks is 0.45? A. 0.38%. B. 6.20%. C. 6.83%. 相关知识点: 试题来源: 解析 B...