Across
1
Visual representation of data
4
Divisible by two
6
Difference between highest and lowest values
8
Reference line in a graph
9
Steepness of a line
10
Sum divided by count
11
Number divisible only by 1 and itself
Down
2
Part of a whole number
3
Lines that never intersect
5
Longest side of a right triangle
7
Symbol representing unknown value