Source code for morse.helpers.statistics
"""
Statistics helper for Morse usage
"""
[docs]class Stats:
"""
A simple class to compute basic statistics on some values, computed
incrementaly
"""
def __init__(self):
self.n = 0
self.mean = 0.0
self.m2 = 0.0
[docs] def update(self, x):
self.n = self.n + 1
delta = x - self.mean
self.mean = self.mean + delta/self.n
self.m2 = self.m2 + delta * (x - self.mean)
@property
def variance(self):
return self.m2 / (self.n - 1)