Consider the Following Partial Analysis of Variance Table from a Randomized

Essay

Consider the following partial analysis of variance table from a randomized block design with 6 blocks and 4 groups (treatments). $$\begin{array} { l c } \text { Source } & \text { Sum of Squares } \\\text { Treatments } & 15.93 \\\text { Blocks } & 42.09 \\\text { Error } & 23.84 \\\text { Total } & 81.86\end{array}$$
-What is the block mean square?