Mean Squared Deviation (MSD)
Mean squared deviation is a formula that provides insight into how any system deviates from expectations.
- aka mean squared error
- takes the square of the errors or deviations from expected/desired outcomes
- formula:
is the actual value is the target value
- commonly used in many engineering disciplines
- the metric is a positive integer
- interpreting:
- closer to zero the MSD is, the more reliable the system is
- can sometimes take the square root of MSD to get the root mean squared deviation
- provides a metric of the impact an incident had on a given system
- How far did the system deviate from the norm?