This document provides an overview of biostatistics and medical statistics. It defines key terms like statistics, biostatistics, medical statistics, and vital statistics. It describes sources of data for vital events and the uses of biostatistics in collecting and analyzing medical data to inform decisions. The document outlines different types of data, variables, scales of measurement, and methods for data collection and presentation. It also defines important statistical measures like mean, median, mode, range, and standard deviation used to summarize central tendencies and dispersion in data.