A Randomized Block Design

Six greenhouse benches were set up as blocks. Within each block one of each of four varieties of house plants was planned. The plant heights (in cm) obtained are tabulated as follows. Using the ANOVA for a RCBD, test the hypothesis that all four varieties of plants reach the same maximum height at measurement time.

Block  Var_1 Var_2 Var_3 Var_4
1       19.8  21.9  16.4  14.7
2       16.7  19.8  15.4  13.5
3       17.7  21.0  14.8  12.8
4       18.2  21.4  15.6  13.7
5       20.3  22.1  16.4  14.6
6       15.5  20.8  14.6  12.9

Note that to get any statistics package to perform the analysis, these data will have to be stacked.