【名词&注释】
相关系数(correlation coefficient)、投资者(investor)、预期报酬率、无风险利率(risk-free interest rate)、标准差分(standard difference)、无风险报酬率(risk-free return rate)、期望报酬率(the rate of expected return)、必要报酬率(necessity guerdon rate)、周期短(short period)、有效年利率(effective annual interest rate)
[多选题]下列说法不正确的有()。
A. A、当计息周期为一年时,名义利率与有效年利率(effective annual interest rate)相等
B. B、当计息周期短(short period)于一年时,有效年利率(effective annual interest rate)小于名义利率
C. C、当计息周期长于一年时,有效年利率(effective annual interest rate)大于名义利率
D. D、当计息周期长于一年时,有效年利率(effective annual interest rate)小于名义利率