
Matrix (pl.: matrices).
A rectangular array of numbers, letters, or other entities arranged in rows and columns.
Maximum/minimum (of a graph).
The highest/lowest point on a graph. A relative maximum/minimum is higher/lower than any other point in its immediate vicinity.
Mean.
The arithmetic average of a set of numerical data.
Median.
The middle value of an ordered set of numerical data. For example, the median value of the set {5, 8, 9, 10, 11, 11,13} is 10.
Mode.
The most frequently occurring value in a set of data. For example, the mode of the set {13, 5, 9, 11, 11, 8, 10} is 11.
Model (mathematical).
A [verb] and a noun. [Generate] a mathematical representation (e.g., number, graph, matrix, equation(s), geometric figure) for real world or mathematical objects, properties, actions, or relationships.
(Non)Linear functional relationship.
(See definition of Function above.) Many functions can be represented by pairs of numbers. When the graph of those pairs results in points lying on a straight line, a function is said to be linear. When not on a line, the function is nonlinear.
Outlier.
For a set of numerical data, any value that is markedly smaller or larger than other values. For example, in the data set {3, 5, 4, 4, 6, 2, 25, 5, 6, 2} the value of 25 is an outlier.

