
Modal Year


The
year which has the largest number of retirements
of any year in the existence of an asset group. It is therefore the critical year on a probability distribution. Attributes Listed below are some of the key attributes associated with the modal year
Analysis Listed below are some concepts associated with the analysis of the modal year 
Fig. Some of the key statistical elements of an asset survivor curve. Fig. Left: Performance along a symmetrical curve; and Right: Three performance classes along a rightmodal survivor curve. Fig. Probability distribution curve indicating the critical year (or modal year) at the peak of a leftmodal curve. Fig. Modal year at the peak of a negatively skewed probability distribution. 

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