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、Gary McDermott runs a two-person investment management firm.McDermottinvests a stock by an equal amount of money into a family account each yearfor four years as follows:

McDermott's average cost per share is closest to:【单选题】

A.€17.04

B.€17.64

C.€18.25

正确答案:A

答案解析:计算式如下：4/(1/12 + 1/19 + 1/17 + 1/25) =17.04(€)。

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、Which of the following is most likely related to the change in polarity principle?【单选题】

A.Volatility.

B.Price.

C.Volume.

正确答案:B

答案解析:压力线和支撑线的反转（change in polarity）是针对价格水平而言的，当价格上升突破原来的压力线时，此时的压力线就会变为支撑线；当价格下跌跌破支撑线时，此时的支撑线就会变为压力线。

4、An analyst does research about time-weighted rate of return and money-weightedrate of return.If an investor makes an initial deposit into a new account,without any other deposits or withdrawals before closing the account,the investor's money-weighted rate of return when closing the accountwill be:【单选题】

A.less than the investor's time-weighted rate of return.

B.equal to the investor's time-weighted rate of return.

C.greater than the investor's time-weighted rate of return.

正确答案:B

答案解析:现金流入和流出账户会影响货币加权收益率（money-weighted rate of return），而如果没有现金流入和流出账户，则货币加权收益率与时间加权收益率(time-weighted rate of return)两者相等。

5、An analyst does research about hypothesis testing and conducts a significancetest to determine if the relationship between two variables is real or the result ofchance.His null hypothesis is that the population correlation coefficient is equalto zero and his alternative hypothesis is that the population correlation coefficientis different from zero.He develops the following information:

The analyst conducts a:【单选题】

A.one-tailed test and can reject his null hypothesis.

B.two-tailed test and can reject his null hypothesis.

C.two-tailed test and can not reject his null hypothesis.

正确答案:C

答案解析:根据5%的显著性水平是1.96的临界值，1%的显著性水平是2.58的临界值，可知是双边检验，1.7081小于1.96，没有落在拒绝域，说明无论在5%的显著性水平还是1%的显著性水平下，都无法拒绝原假设。