Harmonic mean

Purpose: To calculate harmonic mean of a data set.

Code:

>>> from scipy import stats
>>> X = [9.07, 8.97, 6.41, 3.03, 1.19, 2.67, 2.81, 9.2]
>>> result = stats.hmean(X)
>>> print("Harmonic mean = %.2f" % result)
Harmonic mean = 3.35