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...
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准确 C. 标准差...
Standard deviation measures how far apart numbers are in a data set. Variance, on the other hand, gives an actual value to how much the numbers in a data set vary from the mean. Standard deviation is the square root of the variance and is expressed in the same units as the data set....
Standard deviation is a statistical value used to determine how close data points are to a mean value. A standard deviation of...
A sample of 50 items has a variance of 16. What is the standard deviation? A. 2 B. 4 C. 8 D. 16 相关知识点: 试题来源: 解析 B。本题考查方差和标准差的关系。标准差是方差的平方根,方差为 16,标准差为 4。A 选项 2 错误;C 选项 8 错误;D 选项 16 错误。
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 collection of data is. Furthermore, SD is calculated as the square root of the variance of the ...
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...
explain what“1 standard deviation above the average score"means。能用英语回答就更好了, 相关知识点: 试题来源: 解析 "1 standard deviation above the average score" means that the observation value minus the population mean just equals to 1 standard deviation.The average score is the population ...
结果一 题目 What is the meaning of the standard deviation when it is negative是什么意思 顺便用英语做一下吧 答案 标准差为负值时是什么意思 相关推荐 1 What is the meaning of the standard deviation when it is negative是什么意思 顺便用英语做一下吧 ...
结果一 题目 What is the difference between variance and standard deviation? 大神们用英语回答下吧 答案 方差和标准偏差的区别是什么 相关推荐 1 What is the difference between variance and standard deviation? 大神们用英语回答下吧 反馈 收藏