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能不能再解释一下APR的概念呢 是年化的收益率么 还是一期的收益率？题目中这种quoted on a semiannual bond basis is 3.897%是说3.897%是已经／2之后的一期利率还是需要讲3.897%／2才是1期的？我好像还是和计算年金的思路混在一起
NO.PZ2016031001000076 问题如下 A 5-year, 5% semiannucoupon payment corporate bonis price104.967 per 100 of pvalue. The bons yielto-maturity, quoteon a semiannubonbasis, is 3.897%. analyst hbeen asketo convert to a monthly periocity. Unr this conversion, the yielto-maturity is closest to: A.3.87%. B.4.95%. C.7.67%. A is correct.The yielto-maturity, statefor a periocity of 12 (monthly periocity), is 3.87%.The formula to convert annupercentage rate (annuyielto-maturity) from one periocity to another is follows:(1+APRmm)m=(1+APRnn)n{(1+\frac{APRm}m)}^m={(1+\frac{APRn}n)}^n(1+mAPRm)m=(1+nAPRn)n(1+0.038972)2=(1+APR1212)12{(1+\frac{0.03897}2)}^2={(1+\frac{APR12}{12})}^{12}(1+20.03897)2=(1+12APR12)12(1.01949)2=(1+APR1212)12{(1.01949)}^2={(1+\frac{APR12}{12})}^{12}(1.01949)2=(1+12APR12)121.03935=(1+APR1212)121.03935={(1+\frac{APR12}{12})}^{12}1.03935=(1+12APR12)12(1.03935)1/12=[(1+APR1212)12]1/12{(1.03935)}^{1/12}={\lbrack{(1+\frac{APR12}{12})}^{12}\rbrack}^{1/12}(1.03935)1/12=[(1+12APR12)12]1/121.00322=(1+APR1212)1.00322={(1+\frac{APR12}{12})}1.00322=(1+12APR12)1.00322−1=(APR1212)1.00322-1={(\frac{APR12}{12})}1.00322−1=(12APR12)APR12 = 0.00322 × 12 = 0.03865, or approximately 3.87%.考点APR的转换解析这里考查的是不同计息频率的收益率之间的转换。一年计息两次的年化收益率，即APR2 ，转换到一年计息12次的APR12 ，可以同时转换到一年计息一次（相当于一个过渡）。即(1+APR2 /2)2 =1+EAR=(1+APR12 /12)12 ，得到APR12 为3.87%。 请问APR是在哪里学过呢，怎么这一章我没有看到这个知识点呢？谢谢！
NO.PZ2016031001000076问题如下A 5-year, 5% semiannucoupon payment corporate bonis price104.967 per 100 of pvalue. The bons yielto-maturity, quoteon a semiannubonbasis, is 3.897%. analyst hbeen asketo convert to a monthly periocity. Unr this conversion, the yielto-maturity is closest to: A.3.87%.B.4.95%.C.7.67%. A is correct.The yielto-maturity, statefor a periocity of 12 (monthly periocity), is 3.87%.The formula to convert annupercentage rate (annuyielto-maturity) from one periocity to another is follows:(1+APRmm)m=(1+APRnn)n{(1+\frac{APRm}m)}^m={(1+\frac{APRn}n)}^n(1+mAPRm)m=(1+nAPRn)n(1+0.038972)2=(1+APR1212)12{(1+\frac{0.03897}2)}^2={(1+\frac{APR12}{12})}^{12}(1+20.03897)2=(1+12APR12)12(1.01949)2=(1+APR1212)12{(1.01949)}^2={(1+\frac{APR12}{12})}^{12}(1.01949)2=(1+12APR12)121.03935=(1+APR1212)121.03935={(1+\frac{APR12}{12})}^{12}1.03935=(1+12APR12)12(1.03935)1/12=[(1+APR1212)12]1/12{(1.03935)}^{1/12}={\lbrack{(1+\frac{APR12}{12})}^{12}\rbrack}^{1/12}(1.03935)1/12=[(1+12APR12)12]1/121.00322=(1+APR1212)1.00322={(1+\frac{APR12}{12})}1.00322=(1+12APR12)1.00322−1=(APR1212)1.00322-1={(\frac{APR12}{12})}1.00322−1=(12APR12)APR12 = 0.00322 × 12 = 0.03865, or approximately 3.87%.考点APR的转换解析这里考查的是不同计息频率的收益率之间的转换。一年计息两次的年化收益率，即APR2 ，转换到一年计息12次的APR12 ，可以同时转换到一年计息一次（相当于一个过渡）。即(1+APR2 /2)2 =1+EAR=(1+APR12 /12)12 ，得到APR12 为3.87%。 这里求出或者看出一年计息两次的变化收益率是3.897%之后怎么按计算器求出最终答案？题目是要求按出计息12次的年化收益率吗？
NO.PZ2016031001000076问题如下A 5-year, 5% semiannucoupon payment corporate bonis price104.967 per 100 of pvalue. The bons yielto-maturity, quoteon a semiannubonbasis, is 3.897%. analyst hbeen asketo convert to a monthly periocity. Unr this conversion, the yielto-maturity is closest to: A.3.87%.B.4.95%.C.7.67%. A is correct.The yielto-maturity, statefor a periocity of 12 (monthly periocity), is 3.87%.The formula to convert annupercentage rate (annuyielto-maturity) from one periocity to another is follows:(1+APRmm)m=(1+APRnn)n{(1+\frac{APRm}m)}^m={(1+\frac{APRn}n)}^n(1+mAPRm)m=(1+nAPRn)n(1+0.038972)2=(1+APR1212)12{(1+\frac{0.03897}2)}^2={(1+\frac{APR12}{12})}^{12}(1+20.03897)2=(1+12APR12)12(1.01949)2=(1+APR1212)12{(1.01949)}^2={(1+\frac{APR12}{12})}^{12}(1.01949)2=(1+12APR12)121.03935=(1+APR1212)121.03935={(1+\frac{APR12}{12})}^{12}1.03935=(1+12APR12)12(1.03935)1/12=[(1+APR1212)12]1/12{(1.03935)}^{1/12}={\lbrack{(1+\frac{APR12}{12})}^{12}\rbrack}^{1/12}(1.03935)1/12=[(1+12APR12)12]1/121.00322=(1+APR1212)1.00322={(1+\frac{APR12}{12})}1.00322=(1+12APR12)1.00322−1=(APR1212)1.00322-1={(\frac{APR12}{12})}1.00322−1=(12APR12)APR12 = 0.00322 × 12 = 0.03865, or approximately 3.87%.考点APR的转换解析这里考查的是不同计息频率的收益率之间的转换。一年计息两次的年化收益率，即APR2 ，转换到一年计息12次的APR12 ，可以同时转换到一年计息一次（相当于一个过渡）。即(1+APR2 /2)2 =1+EAR=(1+APR12 /12)12 ，得到APR12 为3.87%。 请问计算器如何按开12次方？
NO.PZ2016031001000076问题如下A 5-year, 5% semiannucoupon payment corporate bonis price104.967 per 100 of pvalue. The bons yielto-maturity, quoteon a semiannubonbasis, is 3.897%. analyst hbeen asketo convert to a monthly periocity. Unr this conversion, the yielto-maturity is closest to: A.3.87%.B.4.95%.C.7.67%. A is correct.The yielto-maturity, statefor a periocity of 12 (monthly periocity), is 3.87%.The formula to convert annupercentage rate (annuyielto-maturity) from one periocity to another is follows:(1+APRmm)m=(1+APRnn)n{(1+\frac{APRm}m)}^m={(1+\frac{APRn}n)}^n(1+mAPRm)m=(1+nAPRn)n(1+0.038972)2=(1+APR1212)12{(1+\frac{0.03897}2)}^2={(1+\frac{APR12}{12})}^{12}(1+20.03897)2=(1+12APR12)12(1.01949)2=(1+APR1212)12{(1.01949)}^2={(1+\frac{APR12}{12})}^{12}(1.01949)2=(1+12APR12)121.03935=(1+APR1212)121.03935={(1+\frac{APR12}{12})}^{12}1.03935=(1+12APR12)12(1.03935)1/12=[(1+APR1212)12]1/12{(1.03935)}^{1/12}={\lbrack{(1+\frac{APR12}{12})}^{12}\rbrack}^{1/12}(1.03935)1/12=[(1+12APR12)12]1/121.00322=(1+APR1212)1.00322={(1+\frac{APR12}{12})}1.00322=(1+12APR12)1.00322−1=(APR1212)1.00322-1={(\frac{APR12}{12})}1.00322−1=(12APR12)APR12 = 0.00322 × 12 = 0.03865, or approximately 3.87%.考点APR的转换解析这里考查的是不同计息频率的收益率之间的转换。一年计息两次的年化收益率，即APR2 ，转换到一年计息12次的APR12 ，可以同时转换到一年计息一次（相当于一个过渡）。即(1+APR2 /2)2 =1+EAR=(1+APR12 /12)12 ，得到APR12 为3.87%。 请问下老师为什么PMT是2.5?
我用计算器这么按的 N=5*12=60 PV= -104.967 PMT= 100*5%/12=0.4167 FV=100 算出来 IY=0.3254这个应该是月化，我再乘以 12 得到对应的年化是 3.9，为什么这样是不对的呢？
