def test_uniform():
U = Uniform(-3, -1)
assert U.mean == -2
assert U.confidence(1) == (-3, -1)
assert U.confidence(Rational(1, 2)) == (Rational(-5, 2), Rational(-3, 2))
assert U.pdf(-4) == 0
assert U.pdf(-Rational(3, 2)) == Rational(1, 2)
assert U.pdf(0) == 0
assert U.cdf(-4) == 0
assert U.cdf(-Rational(3, 2)) == Rational(3, 4)
assert U.cdf(0) == 1
def test_fit():
import random
random.seed(1234)
n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
#print n.mean
#print n.stddev
assert abs(n.mean - 2) < 0.3
assert abs(n.stddev - 1.5) < 0.3
n = Normal.fit([1,2,3,4,5])
assert n.mean == 3
assert n.stddev == sqrt(2)
n = Uniform.fit([1,2,3,4,5])
assert n.mean == 3
assert n.stddev == sqrt(2)
def test_uniform():
U = Uniform(-3, -1)
assert U.mean == -2
assert U.confidence(1) == (-3, -1)
assert U.confidence(Rational(1,2)) == (Rational(-5,2), Rational(-3,2))
assert U.pdf(-4) == 0
assert U.pdf(-Rational(3,2)) == Rational(1,2)
assert U.pdf(0) == 0
assert U.cdf(-4) == 0
assert U.cdf(-Rational(3,2)) == Rational(3,4)
assert U.cdf(0) == 1
def test_fit():
import random
random.seed(1234)
n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
#print n.mean
#print n.stddev
assert abs(n.mean - 2) < 0.3
assert abs(n.stddev - 1.5) < 0.3
def test_fit():
import random
random.seed(1234)
n = Normal.fit(Uniform.fit(Normal(2, 1.5).random(1000)))
#print n.mean
#print n.stddev
assert abs(n.mean - 2) < 0.3
assert abs(n.stddev - 1.5) < 0.3
def test_uniform():
U = Uniform(-3, -1)
assert str(U) == "Uniform(-3, -1)"
assert repr(U) == "Uniform(-3, -1)"
x = U.random()
assert x < -1 and x > -3
assert U.mean == -2
assert U.confidence(1) == (-3, -1)
assert U.confidence(Rational(1,2)) == (Rational(-5,2), Rational(-3,2))
assert U.pdf(-4) == 0
assert U.pdf(-Rational(3,2)) == Rational(1,2)
assert U.pdf(0) == 0
assert U.cdf(-4) == 0
assert U.cdf(-Rational(3,2)) == Rational(3,4)
assert U.cdf(0) == 1
