Interpolated Yield- Reading 21

Hi All,

In the reading 21 Credit Strategies, I have a doubt respect to the BB- example 2 and 8. In both exercise we have to calculate the interpolated yield, but in the example 2 the answer use the bonds maturity while the example 8, the answer use the bonds duration. So which one we should use?


E-mail CFA Institute ( and ask them.

Please report back what they say.

Hey , In the same boat !
I also had the same query as in with Ex 2. I looked up last year example and see that they have used Effective duration instead of duration. I emailed about this to erata team but have not received yet any reply ( been around a month) . Not sure what to do .