A simple class for tracking mean, variance and standard deviation in an online fashion.
Example use
const OnlineStatistics = ;const o = ;o;console; // prints 1o;console; // prints 1.5
Available methods on the object are
observe(record)
- observe a new data point.
mean()
- get the mean so far.
variance(sample = false)
- get the variance so far (sample or population).
standardDeviation(sample = false)
- get the corrected standard deviation (sample or population).
Can be serialized with JSON.stringify and provides a fromJSON method.