In linear regression, the symbol b denotes the model's intercept.

• A. Coefficient
• B. P-value
• C. Value
• D. Intercept

Answer: (D)

The key idea here is telling apart the constant term (the intercept) from the slope (the coefficient) in a linear regression model. The intercept is the predicted value of y when the predictor x is zero; it’s the vertical offset of the regression line. In this question’s notation, the symbol b is used to represent that constant term, so saying that b denotes the intercept matches how this particular notation labels the model’s constant term.

That’s why the intercept is the best fit answer. The other terms don’t identify the component the symbol stands for: a coefficient is a general term for a parameter that scales a predictor (often the slope), a p-value is a statistic used to test significance, and a value is too vague to specify a model parameter.