吸引力面孔安慰剂

import pandas as pd
from scipy import stats

url = 'https://liangdaima.com/static/data/ds/goggles.csv'
df = pd.read_csv(url)
placebo = df[df['alcohol'] == 'Placebo']
attractive = placebo[placebo['facetype'] == 'Attractive']['attractiveness']
unattractive = placebo[placebo['facetype'] == 'Unattractive']['attractiveness']
t_stat, p_value = stats.ttest_ind(attractive, unattractive)
print(f'{t_stat:.4f}')