百度试题 题目What is the coefficient of variation for a distribution with a mean of 10 and a variance of 4? A. 20%. B. 40%. C. 25%. 相关知识点: 试题来源: 解析 A 略 反馈 收藏
正确答案:A 分享到: 答案解析: Coefficient of variation, CV = standard deviation / mean. The standard deviation is the square root of the variance, or 4½ = 2. So, CV = 2 / 10 = 20%. 统计:共计66人答过,平均正确率62.12% 问题:进入高顿部落发帖帮助相似...
The coefficient of variation is expressed as a percentage. a) True b) False Find the coefficient of determination and give an interpretation of it in the context of the problem. Explain when the phi coefficient should be used. What is the range of feasible values for the coefficient of deter...
Even though these indexes have similar 10-year historical returns, Dow Jones has a lower CV, so you are theoretically taking less risk for the reward of those returns. Takeaway The coefficient of variation is like choosing which games you play at the state fair… You may want to play the ...
What is the variance? Define the coefficient of determination, what does it measure? Considering the following data, what is the standard variation? Why do researchers calculate the coefficient of determination? What does a coefficient of determination of .40 indicate?
What is the difference between the coefficient of variation and correlation coefficient? The coefficient of variation shows the dispersion of data points (how spread out they are) compared to the mean (average) of the data set. You typically see it visualized as a scatter plot (a line with ...
What is considered high variance? As a rule of thumb, a CV >= 1 indicates a relatively high variation, while a CV < 1 can be considered low. This means thatdistributions with a coefficient of variation higher than 1are considered to be high variance whereas those with a CV lower than ...
If the sum of squares total is 800 and the sum of squares error is 170. What is the r-squared value? A. lower than .25 B. between .26 and .5 C. between .51 and .75 D. between .76 and 1.00 E. greater than 1.01 Define and describe the Coefficient of Variation using a formula...
The coefficient of variation is 0.42 (8% ÷ 19%). The third investment, bond, ABC, has a volatility of 5% and an expected return of 8%. The coefficient of variation therefore is 0.63 (5% ÷ 8%). Investors' risk aversion differs from one investor to another. How...
One way to correct this is to create acoefficient of variationfor the average differences between the balance sheet figures and the market values at the time, for a subset of commonly held assets across large banks. In practice, however, banking sector analysts continued to calculate stringent ma...