There are two types of reports: formal reports and informal reports. Formal reports are used to document experiments, designs, and pass on information formally. They follow a standard format including a front cover, title page, table of contents, abstract, main text with introduction, discussion, and conclusion, and back matter with references, appendix, and glossary. Some examples of formal reports are design reports and business reports. Engineers and scientists write formal reports to document experiments, designs, and provide routine information.