Statistics encompasses the collection, analysis and interpretation of data. Statisticians work with theoretical and applied statistics in both the private and public sectors. The core of that work is to measure, interpret, and describe the world and human activity patterns within it.

It is common to combine statistical knowledge with expertise in other subjects. The applications are varied. Statisticians apply their knowledge to production, research, finances, medicine, insurance, and government. They often are employed to support managerial decisions or to supervise quality control in manufacturing.