The document discusses data in the context of research. It defines data as a reinterpretable representation of information that can be communicated, interpreted, or processed. Data takes many forms like bits, numbers, text, sounds, images, and physical specimens. The document outlines four main categories of data: observational, computational, experimental, and records. Data sources and types vary across disciplines like the sciences, social sciences, and humanities. For example, scientists may generate their own data or acquire it from repositories, while humanists work with archives, libraries, and published works. Overall, data plays a key role in research as alleged evidence that is analyzed to produce findings and answer research questions.