Across
1
The number representing nothing
3
Part of a whole number
4
Middle value in an ordered dataset
5
Number less than zero
6
Exact correspondence on both sides
12
Rectangular array of numbers
Down
2
Sum divided by count
3
Mathematical rule or equation
6
Part of a line with two endpoints
7
Single numeral from 0 to 9
8
Visual representation of data
9
Power to which a number is raised
10
Value that does not change
11
Line segment connecting two circle points