Descriptive Statistics and Distributions
Mean, median, variance, std, skewness, kurtosis, normal/binomial/Poisson distributions.
Summarizing Data
Descriptive statistics condense a dataset into a few numbers describing its center, spread, and shape. They are the first thing you compute on any new dataset.
import numpy as np
data = np.array([4, 8, 6, 5, 3, 7, 9, 6])Mean and Median
The mean is the arithmetic average; the median is the middle value. The median resists outliers, so a large gap between them signals skew.
print(np.mean(data)) # 6.0
print(np.median(data)) # 6.0All lessons in this course
- Descriptive Statistics and Distributions
- Probability and Bayes Theorem
- Hypothesis Testing
- Correlation and Covariance