Зв'язок із тотожностями лінійності/відношень

If you're interested in learning about identities related to linearity or ratios, check out our examples such as properties of the mediant $\frac{a+c}{b+d}$ (given two fractions $\frac{a}{b}$ and $\frac{c}{d}$), and the closely related Simpson's paradox.