array averaging

n [12]: (a + b + c) / 3
Out[12]:
array([-0.53154032,  0.18395267, -0.75703294,  0.32764292, -0.81357454,
        0.78473012,  0.45351259,  0.66081087,  0.38415053,  0.12373847,
       -0.26399553, -0.97854133,  0.32224833,  0.02425718, -0.17624272,
        0.35424787,  0.59142156,  0.27389557, -0.97585102,  0.27461639,
       -0.07779556,  0.91025065, -0.17726666, -0.62678585, -0.86198864,
       -0.77567443, -0.29488594, -0.49801826, -0.35440822,  0.09438202])

In [13]: history
import antigravity
import numpy
import scipy
scipy.randn?
scipy.randn(30)
a = scipy.randn(30)
b = scipy.randn(30)
c = scipy.randn(30)
a + b + c
(a + b + c) / 3
history