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Standard deviation is (formula).Drawback of the standard deviation is .
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2024-06-19 09:37:56
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相关试题
1.
There are two series A and B, if the range of A is larger than that of B, then () 选项: A、The standard deviation of A must be greater than that of B B、The standard deviation of A must be less than that of B C、The standard deviation of A must be equal to that of B D、There is no relationship between the range and the standard deviation
2.
The value of the standard deviation of all possible sample means, called the ( ). 选项: A、standard erro B、standard error of the mean C、standard error of the standard deviation D、variation
3.
Standard deviation
4.
standard deviation
5.
The variance can never be 选项: A、 zero B、 larger than the standard deviation C、negative D、smaller than the standard deviation
6.
The standard deviation of a portfolio: 选项: A: is a weighted average of the standard deviations of the individual securities held in the portfolio. B: can never be less than the standard deviation of the most risky security in the portfolio. C: must be equal to or greater than the lowest standard deviation of any single security held in the portfolio. D: is an arithmetic average of the standard deviations of the individual securities which comprise the portfolio. E: can be less than the standard deviation of the least risky security in the portfolio.Difficulty: 1 EasyTopic: Standard deviation and varianceLearning Objective: 13-01 Show how to calculate expected returns, variance, and standard deviation.
7.
When sampling from a population of measurement data. If the sample size is increased, there will be ( )选项: A:increase in standard deviation B:decrease in standard deviation C:increase of standard error D:decrease of standard error
8.
Coefficient of variation= Standard deviation /
9.
Assuming the annual standard deviation of market returns is 14.5%, the two-year standard deviation is ___.选项: A:53.85%; B: 20.51% ; C:29%; D:76.26%
10.
An analyst stated that the mean of the standard normal distribution always has a value of zero but that the standard deviation of the standard normal distribution can take on a value from 0 to 1. 0. Is the analyst correct with respect to the value of the standard normal distribution’s: mean Standard deviation ① 选项: A、No No ② B、No Yes ③ C、Yes No A.① D、② E、③
11.
The budget line in portfolio analysis shows that: 选项: A:the expected return on a portfolio increases as the standard deviation of that return increases. B:the expected return on a portfolio increases as the standard deviation of that return decreases. C:the expected return on a portfolio is constant. D:the standard deviation of a portfolio is constant. E:a riskless portfolio will earn a zero return.
12.
The numerical value of the standard deviation can never be negative.
13.
The descriptive measure of dispersion that is based on the Concept of a deviation about the mean is( ) 选项: A:the range B:the interquartile range C:the absolute value of the range D:the standard deviation
14.
Coefficient of variation= Standard deviation / Average demand( )选项: A:对 B:错
15.
Which one of the following security classes has the highest standard deviation of returns?
16.
The standard error of the mean is:? the standard deviation of the sampling distribution of sample means.the variance squared.always normally distributed.sometimes less than 0.
17.
Which of the following statistics is a measure of dispersion?选项: A:Mean; B:Median; C:Mode; D:Standard deviation
18.
Aggregation reduces the standard deviation of demand only if demand across the regions being aggregated is not perfectly positively correlated.
19.
A.mean B.vanance C.percentile D.standard deviation E.coefficient of variation
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