Metrics

• Preferred observed (real) data over estimates
• Metric need to be inexpensive to catch

Important data to extract from metrics:

• Cycle time
• Lead time
• Throughput
• Number of issues and blockers on the board
• Due-date performance
  
  

Shows:

• trends on how the process is doing over time
• level of variability or predictability

You can track lead time, cycle time or other metrics.

The upper and lower limit are calculated with the one sigma (check STDEVP formula)

Outliers (special cause) can be discarded from average calculation

You can see the relation between WIP and lead time.
The more work you have in process (WIP), the longer your lead time will become.

Give you the number of item at a certain state, at a specific time.