SPSS Guide: Tests of Differences - iranspss

Notice that the output compares the group in the left column with the other two groups in the right column and gives you the significance level and the difference in means. The 25 year old + group is significantly different (p=.000) than the other two groups, but there is no significant difference between the 15-18 year olds and 19-24 year olds. ................
................