In linear regression, the symbol x denotes the independent variable's value.

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

Answer: (C)

In linear regression, x is the input value of the predictor for a given observation. In the equation ŷ = β0 + β1 x, the intercept β0 and the slope β1 are parameters, while x is the actual value of the independent variable used to compute the predicted y for that observation. A p-value is a separate statistic used for hypothesis testing about the coefficients, not the variable’s value itself. So, x denotes the value of the independent variable.