A.N. Sah is Assistant Professor of Business Statistics, Engineering Economics and Econometrics, Business Forecasting, Advanced Research Methods at the School of Social Sciences, Thapar University, Patiala, Punjab. He has authored Data Analysis using Microsoft Excel. He obtained his Ph.D in Economics from the University of Hyderabad. He has been teaching statistics, economics, econometrics to the students of various professional and non-profssional courses since last 8 years. He is also involved in research on macroeconomic issues and capital markets. Several of his research papers have been published in national and international journals of repute.