Statistics is the science of compiling, classifying and tabulating numerical data and expressing the results in a mathematical or graphical form. Biostatistics is that branch of statistics concerned with mathematical facts and data are related to health, preventive medicine and disease. Understanding biostatistics is very important as it helps in research study as well as in clinical analysis.Almost all clinical investigations in medicine and dentistry involve the investigation of some individuals treated in the past or present for the purpose of accumulating information that can be applied...