Homonym: β (Beta)
The Greek letter "β" (beta) is the second letter of the Greek alphabet. In the Greek numeral system, it has a value of 2. It is commonly used in various fields, including mathematics, science, and finance, to represent different concepts, such as coefficients in equations or the measure of volatility in finance.
In the context of science, "β" often denotes beta particles, which are high-energy, high-speed electrons or positrons emitted during radioactive decay. Additionally, in statistics, "β" can represent the slope of a regression line in a linear regression analysis, indicating the relationship between variables.