This book has been designed for students and researchers who are working in the field of time series analysis and estimation in finite population.There are papers by Rajesh Singh, Florentin Smarandache, Shweta Maurya, Ashish K. Singh, Manoj Kr. Chaudhary, V. K. Singh, Mukesh Kumar and Sachin Malik.First chapter deals with the problem of time series and the rest of four chapters deal with the problems in estimation in finite population.