From Textus Receptus
Vita (uppercase Β, lowercase β, internal ϐ) is the second letter of the Greek alphabet. In high-quality print, the variant of the lowercase letter without a descender is used within a word: βίβλος is printed |βίϐλος. The form ‹ϐ› is very common in handwriting.
The name of the letter is pronounced /ˈbeɪtə/ (US) or /ˈbiːtə/ (UK), and in Greek βήτα ˈvita.
In the system of Greek numerals Beta has a value of 2.
Math and science
Beta is often used to denote a variable in mathematics and physics, where it often has specific meanings for certain applications, such as representing beta radiation. In regression analysis, ‹B› symbolizes non-standardized partial slope coefficients, whereas ‹β› represents standardized (standard deviation-score form) coefficients; in both cases, the coefficients reflect the change in the criterion Y per one-unit change in the value of the associated predictor X.
Beta is used in finance as a measure of investment portfolio risk.
International Phonetic Alphabet