医学统计学 (有时以生物测定学著名, 虽然生物测定学的新发展是涉及另外一个领域)一般来说是统计对生物学和医学的应用。由于在生物和医学研究问题是各种各样的, 生物统计学扩展它的领域包括任何定量,不仅统计,也许其他模型。对临床试验的设计和分析就是医学统计学在医学里最明显的应用。

大部分的医学统计学课程都是给大学学士毕业生的。在公共卫生学校、医学院、林业或农业或应用统计的学院是常见的课程，甚至某些美国的大学会为医学统计学设立独立学院。

医学统计学常用以下领域的定量方法：

常常应用在以下的研究范围:

Medical statistics deals with applications of statistics to medicine and the health sciences, including epidemiology, public health, forensic medicine, and clinical research. Medical statistics has been a recognized branch of statistics in the United Kingdom for more than 40 years but the term has not come into general use in North America, where the wider term 'biostatistics' is more commonly used. However, "biostatistics" more commonly connotes all applications of statistics to biology. Medical Statistics are a sub discipline of Statistics. "It is the science of summarizing, collecting, presenting and interpreting data in medical practice, and using them to estimate the magnitude of associations and test hypotheses. It has a central role in medical investigations. It not only provides a way of organizing information on a wider and more formal basis than relying on the exchange of anecdotes and personal experience, but also takes into account the intrinsic variation inherent in most biological processes."