2020年CFA考试《CFA一级》考试共240题，分为单选题。小编为您整理Quantitative Methods5道练习题，附答案解析，供您备考练习。

1、An analyst does research about common probability.A return distribution has amean of 1.8% and a variance of 2.25.If returns are normally distributed, theprobability of observing a return value less than -1.2% is closest to:【单选题】

A.1.0%

B.2.5%

C.5%

正确答案:B

答案解析:( -1.2% -1.8% )% = -2，正态分布如果落在均值附近1.96个标准差以内的概率大约是95%，则落在两边的概率各是2.5%。

2、A two-tailed test of the null hypothesis that the mean of a distribution is equal to 4.00 has a p-value of 0.0567. Using a 5% level of significance (i.e., α = 0.05), the best conclusion is to:【单选题】

A.reject the null hypothesis.

B.fail to reject the null hypothesis.

C.increase the level of significance to 5.67%.

正确答案:B

答案解析:“Hypothesis Testing,” Richard A. DeFusco, CFA, Dennis W. McLeavey, CFA, Jerald E. Pinto, CFA, and David E. Runkle, CFA
2013 Modular Level I, Vol. 1, Reading 11, Section 2
Study Session 3-11-e
Explain and interpret the p-value as it relates to hypothesis testing.
B is correct. Because the p-value (0.0567) exceeds the stated level of significance (0.05), we cannot reject the null hypothesis.

3、An analyst does research about holding period return and gathers the followinginformation about two securities:

The holding period of return of Security 1 is:【单选题】

A.less than the holding period of return of Security 2.

B.the same as the holding period of return of Security 2.

C.great than the holding period of return of Security 2.

正确答案:C

答案解析:(117 - 123 + 1.95)/123 = -3.30% > (53 - 56 + 1.02)/56 = -3.54%。

4、An investor purchases 100 shares of stock at a price of $40 per share. The investor holds the stock for exactly one year and then sells the 100 shares at a price of $41.50 per share. On the date of sale, the investor receives dividends totaling $200. The holding period return on the investment is closest to:【单选题】

A.3.75%.

B.8.43%.

C.8.75%.

正确答案:C

答案解析:“Discounted Cash Flow Applications,” Richard A. Defusco, CFA, Dennis W. McLeavey, CFA, Jerald E. Pinto, CFA, and David E. Runkle, CFA
2011 Modular Level I, Vol. 1, p. 319
Study Session 2-6-c
Define, calculate, and interpret a holding period return (total return).

5、All else being equal, specifying a lower significance level in a hypothesis test ismost likely to increase the probability of a:【单选题】

A.

B.

C.

正确答案:A

答案解析:显著性水平决定的是犯第一类错误（去真错误）的可能性，降低显著性水平会减少犯第一类错误（去真错误）的可能性，但同时会增加犯第二类错误(去真错误）的可能性。