Find the Range -3 , -2 , -1 , 0 , 1 , 2 , 3

$- 3$ , $- 2$ , $- 1$ , $0$ , $1$ , $2$ , $3$

Subtract the minimum data value from the maximum data value to find the data range. In this case, the data range is $3 - - 3 = 6$ .