Python 线性建模入门
Jason Vestuto
Data Scientist
总体统计量 vs 样本统计量
print( len(month_of_temps), month_of_temps.mean(), month_of_temps.std() ) print( len(decade_of_temps), decade_of_temps.mean(), decade_of_temps.std() )
从总体中随机抽样
month_of_temps = np.random.choice(decade_of_temps, size=31)
# Resampling as Iteration num_samples = 20 for ns in range(num_samples): sample = np.random.choice(population, num_pts) distribution_of_means[ns] = sample.mean()
# Sample Distribution Statistics mean_of_means = np.mean(distribution_of_means) stdev_of_means = np.std(distribution_of_means)
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