Statistics is the science whereby inferences are made about specific random phenomena on the basis of relatively limited sample material. Today statistics is widely employed in government, business, and all the sciences. Electronic computers have expedited statistical computation, and have allowed statisticians to develop "computer-intensive" methods Research is usually done to solve those questions which are still a puzzle for society. Research can help the human kind to find out new ways to lead healthy life style or how to cure deadly diseases and many more things which are an obstacle in...