The ratio of the residual sum of squares versus the total SS should be smaller if most of your data fits the regression line. df: Statistical value known as degrees of freedom related to the sources of variance.The remaining values in the regression output give you details about smaller components in the regression analysis. Observations: The number of observations in your regression model.
If this error is small then your regression results are more accurate.
The purpose of regression analysis is to evaluate the effects of one or more independent variables on a single dependent variable. Statistical Analysis Excel » Regression Analysis Regression Analysis in Excel You Don't Have to be a Statistician to Run Regression Analysis