Data for Pinus virginianus needle length data, in millimeters:

Group         Mean         Standard Deviation      Variance
1                  53.05              11.45                    131.1
2                  62.2                11.1                      122.1 
3                  65.3                12.21                    149.2
4                  67.7                  6.7                        44.33
5                  65.2                12.7                       161.25
6                  62.04              10.04                     100.9
7                  57.25              12.27                     150.44
8                  53.29              11.1                       123.19
9                  68.7                17.9                       322.6
10                64.4                11.7                       134.2