Anovatesting three age groups
  Samples
1 2 3 Total
N 162 151 168 481
-X 6234 5831 6483 18548
-Mean 38.4815 38.6159 38.5893 38.5613
-X2 269326 257147 284855 811328
Variance 182.8102 213.1848 207.6686 200.1926
Std.Dev. 13.5207 14.6008 14.4107 14.1489
Std.Err. 1.0623 1.1882 1.1118 0.6451
ANOVA Summary
Source SS df MS F P
Treatment/between groups 16.137 2 0.8069 0 1
Table 2b: Anova testing three age groups