A week in which an account's contact or ticket volume exceeds a stated multiple of its own trailing median. Read as a product problem when several accounts share a category, or an account at risk when one account surges alone.
A global threshold flags large accounts always and small ones never. Each account against its own history.
An account whose volume went to zero is the other half of the signal.
A week in which an account's ticket or contact volume exceeds a stated multiple of its own trailing median.
An account with a median of 2 tickets a week raised 11. Nine are in one category. It renews in ten weeks.
Thresholds set on absolute volume, which flags large accounts every week and never the small one in trouble.