One-side ANOVA
GRADE
N
Mean
Std. Deviation
Std. Error
95% Confidence Interval for Mean
Min
Max
Lower Bound
Upper Bound
group1
36
3.083
2.394
0.399
2.273
3.894
0.0
8.0
group3
32
1.781
1.879
0.332
1.104
2.459
6.0
Total
68
2.471
2.249
0.272
1.926
3.015