Five ways to measure performance

Ways to measure Performance

The video in the above link says that:
A good performance measure is defined by an objective evidence of the degree to which a performance result is occurring overtime.
Ex: In a software company, the performance of the software depends on its number of bugs detected.

5 ways to measure performance: 
1.Use counts when your population size doesn't change.
2. Use percentages to measure a dynamic population.
3. Use sums and totals and continuous measures.
4. Use averages to understand degree.
5. Use ratios to measure rates of productivity.