Ββ
MATHEMATICS
- Beta function B(·,·) and integrals.
- Generic constants/coefficients.
PROBABILITY
- Beta distribution (parameters α, β).
- Prior/hyperparameter in Bayesian models.
STATISTICS
- Regression coefficients (β).
- Type II error (β) and power (1−β).
PRONUNCIATION
- Ancient Greek
- sound [b]
- Modern Greek
- βήτα [ˈvita] · sound [v]
IN FORMULAS
- poder = 1 − ββ is the Type II error rate; 1 − β, the power of a test.See it explained at morrisonkuhlsen.com →
- y = β₀ + β₁x + εIntercept and slope of a linear regression.See it explained at morrisonkuhlsen.com →
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uppercasesame as the Latin letter: LaTeX has no command for it
Note: notations vary between books/fields; these are the most common usages.