Menggunakan minitab
1. Input/masukkan data dengan format sepeti pada SPSS
Lalu klik menu Stat →ANOVA → One Way
Pada response : select lebar daun
Pada factor select : kode pupuk
Lalu klik comparison:
Centang Tukey’ dan Dunset dengan control group level 1
One-way ANOVA: Lebar Daun versus Kode Pupuk
Source DF SS MS F P
Kode Pupuk 2 419.8442 209.9221 1923231.84 0.000
Error 27 0.0029 0.0001
Total 29 419.8472
S = 0.01045 R-Sq = 100.00% R-Sq(adj) = 100.00%
Terlihat bahwa nilai p value=0.000> alpha=0.05 maka disimpulkan minimal satu kelompok berbeda rata-ratanya
Individual 95% CIs For Mean Based on
Pooled StDev
Level N Mean StDev +---------+---------+---------+---------
1 10 4.9999 0.0089 *
2 10 8.0001 0.0122 *
3 10 13.9984 0.0099 *
+---------+---------+---------+---------
5.0 7.5 10.0 12.5
Pooled StDev = 0.0104
Dunnett's comparisons with a control
Family error rate = 0.05
Individual error rate = 0.0273
Critical value = 2.33
Control = level (1) of Kode Pupuk
Intervals for treatment mean minus control mean
Level Lower Center Upper -+---------+---------+---------+--------
2 2.9892 3.0001 3.0110 *
3 8.9876 8.9985 9.0094 *
-+---------+---------+---------+--------
3.2 4.8 6.4 8.0
Tukey 95% Simultaneous Confidence Intervals
All Pairwise Comparisons among Levels of Kode Pupuk
Individual confidence level = 98.04%
Kode Pupuk = 1 subtracted from:
Kode
Pupuk Lower Center Upper -----+---------+---------+---------+----
2 2.9885 3.0001 3.0117 (*
3 8.9869 8.9985 9.0101 *)
-----+---------+---------+---------+----
-4.0 0.0 4.0 8.0
Kode Pupuk = 2 subtracted from:
Kode
Pupuk Lower Center Upper -----+---------+---------+---------+----
3 5.9867 5.9983 6.0099 *
-----+---------+---------+---------+----
-4.0 0.0 4.0 8.0
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