The concept of cost efficiency was introduced by Farrell (1957) as the ratio of factor minimal cost to the actual cost. Unlike technical efficiency, the cost efficiency measure takes into consideration changes in input mix also. The Farrell cost efficiency measure was extended by Fare et.al (1984) for the case of multiple inputs and outputs. Solving one linear programming problem for one production unit, the factor minimal cost can be calculated which is called in this study as 'Farrell Cost Efficiency'. This is a very restrictive measure since it requires the knowledge of input prices and these prices are assumed to be constant.This book describes the concepts of various types of market efficiencies of decision making units (DMU's) such as price efficiency, Farrell cost efficiency, Economic efficiency, Input technical efficiency and Input Associative efficiencies. The study aims at evaluating the cost efficiencies of 77 Indian commercial Banks employing a wide variety of inputs in order to produce a spectrum of outputs.

India was the first country to start a systematic development of long range forecasting techniques for estimating in advance the seasonal monsoon rainfall over the country. For forecasting rainfall on the basis of past values, a variety of time series models are available these are referred as Box-Jenkins methodology Box and Jenkins.Chief objectives of this book is many folds as listed as to compare and predict the nature of rainfall in three taluks of Khammam district using various statistical methods; Critically comparing the behavior of rainfall in Sathupally, Vemsoor and Aswaraopet taluks of Khammam district through ANOM's;To study the Steady State behavior of rainfall in three taluks through Markov Chain.;Predicting the bahaviour of rainfall in three taluks of Khammam district through Moving Average forecasting methods;Estimation of Assured availability of rainfall through Multivariate approach and Distribution free approach of three taluks of Khammam district.