Advent Wreath Candles. Set on the branches of the wreath are four candles: three purple candles and one pink candle. In the center of the wreath sits a white candle. As a whole, these candles represent the coming of the light of Christ into the world. On the first Sunday of Advent, the first purple candle is lit.
In mathematics,  a coefficient is a multiplicative factor in some term of a polynomial, a series or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters, and must be clearly distinguished from the other variables.
A coefficient is the impact of an independent variable for a unit increase in that variable, while the corresponding number under bStdX is the impact of the covariate for a standard deviation increase in that variable. For example, the x-standardized coefficient of education is .2331 (=.0907*2.5697).