<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Data visuali zation or data visuali sation is viewed by many disciplines as a modern equivalent of visual communication . It involves the creation and study of the visual representation of data . </P> <P> To communicate information clearly and efficiently, data visualization uses statistical graphics, plots, information graphics and other tools . Numerical data may be encoded using dots, lines, or bars, to visually communicate a quantitative message . Effective visualization helps users analyze and reason about data and evidence . It makes complex data more accessible, understandable and usable . Users may have particular analytical tasks, such as making comparisons or understanding causality, and the design principle of the graphic (i.e., showing comparisons or showing causality) follows the task . Tables are generally used where users will look up a specific measurement, while charts of various types are used to show patterns or relationships in the data for one or more variables . </P>

Visual representation of data used to convey information