Consider the Randomized Block Design with 4 Blocks and 3

Essay

$$\begin{array} { l l l l l l } \text { Block } & 1 & 2 & 3 & 4 & 5 \\\text { Tr1 } & 2 & 1 & 2 & 3 & 2 \\\text { Tr2 } & 4 & 4 & 1 & 1 & 2.5 \\\text { TR3 } & 3 & 4 & 3 & 2 & 3 \\\text { Mean } & 2 & 3 & 3 & 2 & \text { overall mean } = 2.5\end{array}$$
Consider the randomized block design with 4 blocks and 3 treatments (groups) given above
-What is the error mean square?