1 Brush salmon fillets on both sides with 1/4 cup butter, and sprinkle evenly with the cayenne pepper mixture. 2  Drizzle one side of each fillet with 1/2 remaining butter. 3  In a large, heavy skillet over high heat, cook salmon, butter side down, until blackened, 2 to 5 minutes. Brush salmon fillets on both sides with 1/4 cup butter, and sprinkle evenly with the cayenne pepper mixture. 2  Drizzle one side of each fillet with 1/2 remaining butter. 3  In a large, heavy skillet over high heat, cook salmon, butter side down, until blackened, 2 to 5 minutes.
The intercept (often labeled the constant) is the expected mean value of Y when all X=0. Start with a regression equation with one predictor, X. If X sometimes = 0, the intercept is simply the expected mean value of Y at that value. If X never = 0, then the intercept has no intrinsic meaning. In scientific research, the purpose of a regression model is to understand the relationship between predictors and the response. If so, and if X never = 0, there is no interest in the intercept.
If you have dummy variables in your model, though, the intercept has more meaning. Dummy coded variables have values of 0 for the reference group and 1 for the comparison group. Since the intercept is the expected mean value when X=0, it is the mean value only for the reference group (when all other X=0).f X never = 0, then the intercept has no intrinsic meaning. In scientific research, the purpose of a regression model is to understand the relationship between predictors and the response. If so, and if X never = 0, there is no interest in the intercept.