mass The amount of matter in an object. (It's weight on earth).
mean The sum of the values in a data det divided by the number of values
mean (arithmetic mean) The average of a set of numbers.
median In statistics, the middle measurement when information is arranged in order of size (e.g., 5 is the median of 2, 3, 5, 10, 13). Where there is no middle score, an average of the two central scores is taken.
mega Metric prefix for one million.
midpoint The point which divides a line segment into two equal parts
mixed numeral A symbol representing a whole number and a fraction (e.g.,2 3/8).
modal score In statistics, the measurement that occurs most often (e.g., the modal score of 2, 7, 4, 4, 3, 4, 9, 4 is 4).
multiples the multiples of a number are those numbers which a given number will divide into exactly (e.g., some mutiples of 3 are 3, 6, 9 and 12).