import statistics

x = [8, 1, 2, 4, 28]
#x = [2, 11, 3, 60, 5]
#x = [4.5, 3.8, 6, 4.5, 12]
#x = [3, 1, 3, 7, 13]
#x = [13, 1, 12, 4, -2]
#x = [13, 1, 12, 4, 15, 5]

mean_ = statistics.mean(x)
print("mean_: ", mean_)

hmean = statistics.harmonic_mean(x)
print("using statistics.harmonic_mean() harmonic mean: ", hmean)

gmean = statistics.geometric_mean(x)
print("using statistics.geometric_mean() gmean: ",gmean)