In conclusion, the Gujarati PPT portable is a useful tool for students and instructors in the field of econometrics. It provides a comprehensive overview of the key concepts in basic econometrics, including simple linear regression, multiple linear regression, and violations of classical assumptions. The PPT portable is easy to use, time-saving, and a comprehensive resource for students. If you are looking for a reliable and comprehensive resource on basic econometrics, the Gujarati PPT portable is an excellent choice.