ttest_ind¶
- numeric.stats.ttest_ind(a, b)¶
Calculates the T-test for the means of TWO INDEPENDENT samples of scores.
This is a two-sided test for the null hypothesis that 2 independent samples have identical average (expected) values. This test assumes that the populations have identical variances.
- Parameters
a – (array_like) Sample data a.
b – (array_like) Sample data b.
- Returns
t-statistic and p-value
Examples:
from mipylib.numeric import stats random.seed(1) # Create sample data. a = random.randn(40) b = 4 * random.randn(50) r = stats.ttest_ind(a, b) print r
Result:
>>> run script... (1.4947945927091304, 0.14061883167278577)