Discrete DataData resulting from measurements taken on a discrete variable, i.e. one that can't be divided up into infinitely small parts (examples: value of coins in pupils’ pockets; number of peas in a pod). Discrete data may be grouped. Example: Having collected the shoe sizes of pupils in the school, the data might be grouped into ’number of pupils with shoe sizes 3, 5, 6, 8, 9, 11, etc. |
DivisibilityThe property of being divisible by a given number. Example: A test of divisibility by 9 checks if a number can be divided by 9 with no remainder. |
Division1. An operation on numbers interpreted in a number of ways. Division can be sharing - the number to be divided is shared equally into the stated number of parts; or grouping - the number of groups of a given size is found. Division is the inverse operation to multiplication. 2. On a geometric scale, one part. Example: Each division on a ruler might represent a millimetre. |
DodecahedronA polyhedron with twelve faces. The faces of a regular dodecahedron are regular pentagons. A dodecahedron has 20 vertices and 30 edges. |