Scientists in biology study classification systems to classify and differentiate organisms. In fields such as evolutionary biology, homology and molecular biology, classification is used to assess and analyze different genetic, biological and physical similarities among organisms, and to categorize them together. This categorizing permits certain classification streams that allow scientists to study different genetic traits among similar species. The main organization of animals and plant species on earth that is accepted by most scientists around the world is a type of classification system.
In chemistry, scientists study and classify the chemicals and elements found in nature. The periodic table is a type of classification system used by chemists and other scientists for general chemical information. In addition, chemists follow a set of classification guidelines when naming chemical compounds. Chemicals and ions are grouped together based their structures, chemical properties, stability and physical properties. These classifications are not only important for organizing chemicals, but also for safety reasons.
In anthropology, classification systems are used to assess and organize people within a society. People can be classified according to gender, race, social class and religion. These classifications are important in studying human demographics because it helps determine patterns and correlations among people in society. These classifications play an important role when assessing the overall health of society and the quality of life within a region.
In statistical classification, computer software is used to assess certain problems within a population and classify them according to pre-set criteria. New observations taken into account and the classifications assessed show variable behavioral and social problems within the population. This provides a mathematical approach in understanding and identifying problems within the population.