Question: what are the characteristics of a good metric?
Answer: Strategic. To create effective performance metrics, you must start at the end point--with the goals, objectives or outcomes you want to achieve--and then work backwards. ... 
Simple. Performance metrics must be understandable. ... 
Owned. ... 
Actionable. ... 
Timely. ... 
Referenceable. ... 
Accurate. ... 
Correlated.