Signs That An Oil Pump Needs Replacing The engine of an automobile relies on many parts functioning properly. It should be no surprise that if one becomes deficient; it is going to cause a great deal of wear on the engine itself.
Macaulay duration is a time measure with units in years, and really makes sense only for an instrument with fixed cash flows. For a standard bond the Macaulay duration will be between 0 and the maturity of the bond. It is equal to the maturity if and only if the bond is a zero-coupon bond.
The dual use of the word duration, as both the weighted average time until repayment and as the percentage change in price, often causes confusion. Strictly speaking, Macaulay duration is the name given to the weighted average time until cash flows are received, and is measured in years.