Próbkowanie w Pythonie
James Chapman
Curriculum Manager, DataCamp


| Rok | Średni wiek Francuzów |
|---|---|
| 1975 | 31,6 |
| 1985 | 33,6 |
| 1995 | 36,2 |
| 2005 | 38,9 |
| 2015 | 41,2 |
coffee_ratings["total_cup_points"].mean()
82.15120328849028
coffee_ratings_first10 = coffee_ratings.head(10)
coffee_ratings_first10["total_cup_points"].mean()
89.1
import matplotlib.pyplot as plt
import numpy as np
coffee_ratings["total_cup_points"].hist(bins=np.arange(59, 93, 2))
plt.show()
coffee_ratings_first10["total_cup_points"].hist(bins=np.arange(59, 93, 2))
plt.show()
Populacja:

Próba z wygody:

coffee_sample = coffee_ratings.sample(n=10)
coffee_sample["total_cup_points"].hist(bins=np.arange(59, 93, 2))
plt.show()
Populacja:

Próba losowa:

Próbkowanie w Pythonie