def testVar(self):
t = [1, 1, 1, 3, 3, 591]
mu = _03_thinkstats._mean(t)
var1 = _03_thinkstats._var(t)
var2 = _03_thinkstats._var(t, mu)
self.assertAlmostEquals(mu, 100.0)
self.assertAlmostEquals(var1, 48217.0)
self.assertAlmostEquals(var2, 48217.0)
def _process(table, name):
"""Runs various analyses on this table."""
_02_first._process(table)
table.name = name
table.var = _03_thinkstats._var(table.lengths, table.mu)
table.trim = _03_thinkstats._trimmed_mean(table.lengths)
table.hist = _04_Pmf._make_hist_from_list(table.lengths, name=name)
table.pmf = _04_Pmf._make_pmf_from_hist(table.hist)
def testMeanAndVar(self):
t = [1, 2, 2, 3, 5]
mu = _03_thinkstats._mean(t)
var = _03_thinkstats._var(t, mu)
pmf = _04_Pmf._make_pmf_from_list(t)
mu2 = pmf._mean()
var2 = pmf._var()
var3 = pmf._var(mu2)
self.assertAlmostEquals(mu, mu2)
self.assertAlmostEquals(var, var2)
self.assertAlmostEquals(var, var3)
