Statistics is the science of collecting, analyzing and interpreting data. Statistical methods and techniques are formal tools that are often used to analyze research findings, to support research hypotheses, and to give credibility to research methodology and conclusions. The importance of statistical thinking mainly rests on the fact that it can be used to evaluate the usefulness of information and make appropriate decisions. A statistician is someone who works with theoretical or applied statistics. The role of a statistician is to collect the data in a proper fashion, to scientifically analyze it and to set a stage for its correct interpretation. As a statistical consultant his role is to provide statistical advice and guidance to clients interested in making decision through the analysis or collection of data.