\[\boxed{\mathbf{1215}\mathbf{.}}\]
\[R = 2 - ( - 8) = 2 + 8 = 10;\]
\[Mo_{1} = - 8;\text{\ \ }Mo_{2} = - 5;\]
\[Me = \frac{- 5 + ( - 5)}{2} = - \frac{10}{2} = - 5;\]
\[\overline{X} = \frac{- 8 - 8 - 5 - 5 + 0 + 2}{6} =\]
\[= - \frac{24}{6} = - 4.\]
\[R = 9 - ( - 4) = 9 + 4 = 13;\]
\[Mo_{1} = - 4;\text{\ \ }Mo_{2} = 9;\]
\[Me = \frac{0 + 2}{2} = \frac{2}{2} = 1;\]
\[\overline{X} = \frac{- 4 - 4 + 0 + 2 + 9 + 9}{6} =\]
\[= \frac{12}{6} = 2.\]