Talk:AQA Information and Communication Technology/ICT1/10.1 Knowledge, Information and Data

Data is a quantiative representation of a characterestic. Say for example if we wish to measure the sizes of files than we understand that we have to chosee a scalar and a unit. The scalar and unit measures of size are 19000 bytes, 20000 bytes. It could also be 1000LOC, 2000LOC. They are both measures but in context they are different. If I want to know the file size for storage purposes, then I must know the size in bytes. If however I want to review a document then i must know the number of standard lines. Fortunately we do have some simple calculations Size of an Empty word document 19456 bytes. Size of a document with one line of standard text :19456 b Size of a document with 4 std lines of text      : 19456 b Size of a document with 5 std lines of text       : 19968 b So if we go on experimenting this way we understand that file size changes by 512 bytes. If we investigate further we will find that file size is a multiple of 512 bytes. The point I am trying to make here is that for data to be relevant its absoluteness and relativeness are both important.