output ********************************************************* OLS estimation results Observations 145 R-squared 0.042248 Sigma-squared 3.578756 Results (Ordinary var-cov estimator) estimate st.err. t-stat. p-value constant 14.320 8.470 1.691 0.093 labor 1.491 1.398 1.067 0.288 capital -1.032 0.476 -2.167 0.032 fuel -1.058 1.634 -0.647 0.519 ********************************************************* labor ********************************************************* OLS estimation results Observations 145 R-squared 0.170674 Sigma-squared 0.012889 Results (Ordinary var-cov estimator) estimate st.err. t-stat. p-value constant 1.663 0.494 3.367 0.001 output 0.005 0.005 1.067 0.288 capital 0.129 0.027 4.797 0.000 fuel -0.280 0.095 -2.931 0.004 ********************************************************* capital ********************************************************* OLS estimation results Observations 145 R-squared 0.176148 Sigma-squared 0.108378 Results (Ordinary var-cov estimator) estimate st.err. t-stat. p-value constant -0.709 1.488 -0.477 0.634 output -0.031 0.014 -2.167 0.032 labor 1.086 0.226 4.797 0.000 fuel 0.658 0.279 2.356 0.020 ********************************************************* fuel ********************************************************* OLS estimation results Observations 145 R-squared 0.079293 Sigma-squared 0.009476 Results (Ordinary var-cov estimator) estimate st.err. t-stat. p-value constant 5.129 0.085 60.147 0.000 output -0.003 0.004 -0.647 0.519 labor -0.206 0.070 -2.931 0.004 capital 0.058 0.024 2.356 0.020 *********************************************************