How do researchers determine what is true based on the data they collect? This question is one of the central concerns of statistics, which uses mathematical models to draw useful conclusions about the real world.

China, officially the People's Republic of China, is a sovereign state located in East Asia. It is the world's most populous country, with a population of over 1.35 billion.

A BSc (Bachelor of Science) is an undergraduate degree that prepares students for a career in their field of study. While the degree is often related to courses in the realm of science, students in non-science fields can also earn a BSc.