No.

Sample Size

Range

AVG

SD

1

9

11.5 - 12.6

12.02

0.39

2

9

11.2 - 12.5

12.13

0.38

3

9

11.7 - 12.6

12.29

0.26

4

9

11.7 - 12.8

12.38

0.3

5

9

11.7 - 12.6

12.11

0.32

6

9

11.8 - 13.1

12.43

0.44