There're the four groups.
|
20.9
|
1
|
|
27.2
|
1
|
|
26.6
|
1
|
|
22.1
|
1
|
|
25.3
|
1
|
|
30.1
|
1
|
|
23.8
|
1
|
|
28.2
|
2
|
|
26.2
|
2
|
|
21.6
|
2
|
|
29.7
|
2
|
|
30.3
|
2
|
|
25.9
|
2
|
|
17.8
|
3
|
|
15.9
|
3
|
|
18.4
|
3
|
|
2.02
|
3
|
|
14.1
|
3
|
|
21.2
|
4
|
|
23.9
|
4
|
|
19.5
|
4
|
|
17.4
|
4
|
1. Based upon the computation for the in and between sample variation, make the ANOVA table and test the appropriate null hypothesis using the P-value approach.
2.If warranted use Tukey-Kramer procedure to find out which populations has different means. Use
α = 0.05