Quote from “Codermetrics” by Jonathan Alexander:
To evaluate whether a metric itself is good or bad, you can ask yourself the following questions:
• Is the metric relatively easy to describe and understand?
• Can the metric show me something I don’t already know?
• Does the metric clearly relate to a goal I care about?
If the answer to any of the above questions is clearly no, then the metric either needs more work, or it should probably be discarded.