analytics.py 文件源码

def hypothesis_test(sample_a, sample_b):
    """Perform hypothesis test over two samples of measurements.

    Uses Welch's t-test to check whether energy consumption
    is different in the populations of samples a and b.

    Args:
        sample_a (list of Measurement): measurements of sample a
        sample_b (list of Measurement): measurements of sample b

    Returns:
        t (float): The calculated t-statistic
        prob (float): The two-tailed p-value

    """
    return ttest_ind(
        [measurement.energy_consumption for measurement in sample_a],
        [measurement.energy_consumption for measurement in sample_b],
        equal_var=False
    )