# Intuition and uses for coefficient of variation

I’m currently attending the An Introduction to Operations Management course in Coursera.org. At some point in the course, the professor started to deal with variation in the operations’ time.

The measurement he uses is the Coefficient of Variation, the ratio between the standard deviation and the mean:

$c_v = \frac{\sigma}{\mu}$

Why would this measurement be used? What are the advantages and disadvantages of working with CV besides working with, say, standard deviation? What is the intuition behind this measurement?