Which one of the following alternatives best describes the primary use of descriptive statistics（）
A. They are used to summarize important characteristics of large data sets.
B. They are used to obtain data about the characteristics of any data set that can be used to assess the likelihood of the occurrence of future events.
C. They are used to make forecasts based on large data sets.
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Sarah Kelley, CFA, is analyzing two mutually exclusive investment projects. Kelley has calculated the net present value (NPV) and internal rate of return (IRR) for each project: Project 1: NPV=$230; IRR=15% Project 2: NPV=$4000; IRR=6% Kelley should make which of the following recommendations concerning the two projects: Project 1 Project 2（）①A. Accept Reject ②B. Accept Accept ③C. Reject Accept
A. ①
B. ②
C. ③>
Which of the following statements regarding skewness is FALSE（）
A positively skewed distribution is characterized by many small losses and a few extreme gains.
B. A distribution that is not symmetrical has skew not equal to zero.
C. In a skewed distribution, 95% of all values will lie within plus or minus two standard deviations of the mean.
Which one of the following statements best describes the components of the required interest rate on a security（）
A. The real risk - free rate, the expected inflation rate, the default risk premium, a liquidity premium and a premium to reflect the risk associated with the maturity of the security.
B. The real risk -free rate, the default risk premium, a liquidity premium and a premium to reflect the risk associated with the maturity of the security.
C. The real risk - free rate, the expected inflation rate and a liquidity premium.
金融市场为市场参与者提供了防范资产风险和收入风险的手段，是金融市场的( )。
A. 资源配置职能
B. 财富功能
C. 交易功能
D. 风险分散功能
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