This document discusses the application of biostatistics in a case study. It summarizes key statistical concepts used in the paper such as descriptive statistics like arithmetic mean and standard deviation to describe features of the data. Inferential statistics like the Spearman rank correlation, t-test are used to test hypotheses and draw inferences about population parameters from sample statistics. These statistical analyses help evaluate the objectives of preliminary data analysis which are to edit, describe and summarize key features of the data.