Answer: 0.98

## Explanation The proportion of sales growth explained by the regression results is measured by the **R-squared (R²)** statistic, which is calculated as: \[ R^2 = \frac{SSR}{SST} \] Where: - **SSR** = Sum of Squared Regression = 869.76 - **SST** = Total Sum of Squares = SSR + SSE - **SSE** = Sum of Squared Errors = 22.12 First, calculate SST: \[ SST = SSR + SSE = 869.76 + 22.12 = 891.88 \] Now calculate R²: \[ R^2 = \frac{869.76}{891.88} = 0.975 \approx 0.98 \] This means that **98%** of the variation in sales growth is explained by the three factors in the regression model (X₁, X₂, and X₃). **Interpretation:** - R² = 0.98 indicates a very strong relationship between the independent variables and the dependent variable - Only 2% of the variation in sales growth remains unexplained by the model - This suggests the regression model provides an excellent fit for the data Therefore, the correct answer is **B. 0.98**.

Author: LeetQuiz .