def test_statistic(y, z):
"""Checks if two means are different, tempered
by the sample size of 'y' and 'z'"""
delta = z.mean() - y.mean()
sd_y = y.standard_deviation()
sd_z = z.standard_deviation()
if sd_y + sd_z:
delta /= memo_sqrt(sd_y / len(y) + sd_z / len(z))
return delta
def test_memo_sqrt(self):
assert_equal(base.memo_sqrt(4), 2)
assert_equal(base.memo_sqrt(9), 3)
assert_equal(base.memo_sqrt(4), 2)
def f2(xs):
e = sum((x + (1 / memo_sqrt(i+1))) ** 2 for i, x in enumerate(xs))
return 1 - math.exp(-e)
def f2(xs):
e = sum((x + (1 / memo_sqrt(i + 1)))**2 for i, x in enumerate(xs))
return 1 - math.exp(-e)
def f2(xs):
gxs = g(xs)
a = 1 - memo_sqrt(xs[0] / gxs) - (xs[0] / gxs)
a *= math.sin(10 * math.pi * xs[0])
return gxs * a
def f2(xs):
gxs = g(xs)
a = 1 - memo_sqrt(xs[0] / gxs) - (xs[0] / gxs)
a *= math.sin(10 * math.pi * xs[0])
return gxs * a
def test_memo_sqrt(self):
assert_equal(base.memo_sqrt(4), 2)
assert_equal(base.memo_sqrt(9), 3)
assert_equal(base.memo_sqrt(4), 2)
