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Class OnlineStatistics

extends Object
Online algorithm for computing simple statistics.
This uses Welford's online algorithm (see more here https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance).

Class summary

constructor
Constructs an empty statistics.

Constructors

constructor
Constructs an empty statistics.

Statics

from-byte-array bytes/any -> OnlineStatistics
Constructs statistics from the bytes.
Works with byte arrays generated by to-byte-array.

Methods

count -> int
Count of the collected values.
max -> num
Maximum of the collected values.
Returns null if no values have been collected.
mean -> float
Mean of the collected values.
Returns null if no values have been collected.
min -> num
Minimum of the collected values.
Returns null if no values have been collected.
operator == other/any -> bool
See super.
population-variance -> float
Estimated population variance of the collected values.
Returns null if one or fewer values have been collected.
sample-variance -> float
Estimated sample variance of the collected values.
Returns null if one or fewer values have been collected.
stringify -> string
Stringifies this object.
Inheritance
Objects that need a human-friendly string representation should overwrite this method. The default string is based on the internal class-ID.
to-byte-array -> ByteArray
Serializes the OnlineStatistics.
update value/num -> none
Updates the estimated variance with the value.