\[\boxed{\mathbf{1201}\mathbf{.}}\]
\[1)\ 15,\ - 7,\ 13,\ - 6,\ 8,\ 2,\ 1,\ - 8,\ - 2;\]
\[X_{\min} = - 8;\text{\ \ }X_{\max} = 15.\]
\[R = 15 - ( - 8) = 15 + 8 = 23.\]
\[2)\ 21,\ 12,\ - 1,\ 7,\ - 3,\ 20,\ 14,\ 0,\ 1;\]
\[X_{\min} = - 3;\text{\ \ }X_{\max} = 21.\]
\[R = 21 - ( - 3) = 21 + 3 = 24.\]