Data The term data refers to groups of information that represent the qualitative or quantitative attributes of a variable or set of variables. Data (plural of "datum",which is seldom used)are typically the results of measurements and can be the basis of graphs,images,or observations of a set of variables. Data are often viewed as the lowest level of abstraction from which information and knowledge are derived. Raw data refers to a collection of numbers,characters,images or other outputs from devices that collect information to convert physical quantities into symbols,that are unprocessed. 44 Data ◼ The term data refers to groups of information that represent the qualitative or quantitative attributes of a variable or set of variables. ◼ Data (plural of "datum", which is seldom used) are typically the results of measurements and can be the basis of graphs, images, or observations of a set of variables. ◼ Data are often viewed as the lowest level of abstraction from which information and knowledge are derived. ◼ Raw data refers to a collection of numbers, characters, images or other outputs from devices that collect information to convert physical quantities into symbols, that are unprocessed