5. If no other estimator of a given parameter has a sampling distribution with a smaller variance, the estimator used is best characterized as
A. accurate
B. efficient
C. unbiased
D. consistent
Anewser B. An unbiased estimator is efficient if no other unbiased estimator of the same parameter has a sampling distribution with smaller variance
1. A portfolio of no-dividend-paying common stocks earned a geometric mean return of 5 percent between 1 January 1996 and 31 December 2002. The arithmetic mean return for the same period was 6 percent. If the market value of the portfolio at the beginning of 1996 was $100,000, the market value of the portfolio at the end of 2002 was closest to
A . 135,000
B. 140,710
C. 142,000
D. 150,363
Answer: B
There are seven annual periods between I January 1996 and 31 December 2002, the market value of the portfolio
2. Which of the following statements about standard deviation is most accurate? Standard deviation:
A. is the square of the variance.
B. can be a positive number or a negative number.
C. is denominated in the same units as the original data.
D. is the arithmetic mean of the squared deviations from the mean.
Answer: C
The arithmetic average of the squared deviations around mean is the variance. The standard deviation is the positive square root of the variance and is denominated in the same units as the original data
3. An analyst developed the following probability distribution of the rate of return for a common stock
Scenario Probability Rate of Return
1 0.25 0.08
2 0.50 0.12
3 0.25 0.16
The standard deviation of the rate of return is closest to
A. 0.0200
B. 0.0267
C. 0.0283
D. 0.0400
Answer:C
Expected value=0.12
Variance=0.0008
Standard deviation=0.028
4. A common stock with a coefficient of variation of 0.50 has a (n):
A. Variance equal to half the stock’s expected return
B. Expected return equal to half the stock’s variance
C. Expected return equal to half the stock’s standard deviation
D. Standard deviation equal to half the stock’s expected return
Answer: D
The coefficient of variation is a measure of relative dispersion that indicates how much dispersion exists relative to the mean of the distribution the coefficient of variation is the standard deviation divided by the mean
5. If no other estimator of a given parameter has a sampling distribution with a smaller variance, the estimator used is best characterized as
A. accurate
B. efficient
C. unbiased
D. consistent
Anewser B. An unbiased estimator is efficient if no other unbiased estimator of the same parameter has a sampling distribution with smaller variance
高顿网校温馨提醒
各位考生，2015年CFA备考已经开始，为了方便各位考生能更加系统地掌握考试大纲的重点知识，帮助大家充分备考，体验实战，高顿网校开通了全免费的
CFA题库（包括精题模拟题和全真模考系统），题库里附有详细的答案解析，学员可以通过多种题型加强练习，通过针对性地训练与模考，对学习过程进行全面总结。
点击进入CFA免费题库>>> | CFA精品网课 | 课程专业名称 | 讲师 | 试听 |
3455人正在学习该门课程
| CFA全维度高清网课体验课程
全维度高清实景课堂与录影棚高清独立录制
针对CFA协会考纲，逐点精讲，帮助考生全面掌握CFA课程及考点 | Anky
高顿名师 |  |
80%的人选择了该门课程
| CFA任务制网课（全科）(8.3折)
学员可以灵活选择报读CFA课程
自主地掌握学习的进度
享受更多的学习优惠与增值服务 | Remmy
高顿名师 | |
写评论
