Following is a simple linear regression model: yi = + xi + The following results were obtained from statistical software: syx (regression standard error) = 5.976 SST = 2,018.73 n (total observations) = 31 Variable Parameter Estimate Std. Err. of Parameter Est. Constant -0.0059 0.0032 X -0.0026 0.0011 Simple linear regression model means that: Group of answer choices There are only a few observations so the calculations are simple There are two independent variables The data are presented in a simple and clear way There is only one independent variable