Ujian Aplikasi komputer soal no 2

One-way ANOVA: Kemurnian versus Sample

Analysis of Variance for Kemurnia
Source DF SS MS F P
Sample 4 6.208 1.552 11.09 0.000
Error 15 2.100 0.140
Total 19 8.308
Individual 95% CIs For Mean
Based on Pooled StDev
Level N Mean StDev ---------+---------+---------+-------
a 4 98.800 0.082 (----*-----)
b 4 99.000 0.294 (----*-----)
c 4 98.600 0.245 (-----*----)
d 4 97.800 0.688 (-----*-----)
e 4 99.500 0.271 (----*-----)
---------+---------+---------+-------
Pooled StDev = 0.374 98.00 98.70 99.40

Hipotesa : Tolak h0 karena berdasarkan statistika P
One-way ANOVA: Kemurnian versus Sample

Analysis of Variance for Kemurnia
Source DF SS MS F P
Sample 4 6.208 1.552 11.09 0.000
Error 15 2.100 0.140
Total 19 8.308
Individual 95% CIs For Mean
Based on Pooled StDev
Level N Mean StDev ---------+---------+---------+-------
a 4 98.800 0.082 (----*-----)
b 4 99.000 0.294 (----*-----)
c 4 98.600 0.245 (-----*----)
d 4 97.800 0.688 (-----*-----)
e 4 99.500 0.271 (----*-----)
---------+---------+---------+-------
Pooled StDev = 0.374 98.00 98.70 99.40

Dunnett's comparisons with a control

Family error rate = 0.0500
Individual error rate = 0.0156

Critical value = 2.73

Control = level (b ) of Sample

Intervals for treatment mean minus control mean

Level Lower Center Upper ----------+---------+---------+-------
a -0.9216 -0.2000 0.5216 (------*------)
c -1.1216 -0.4000 0.3216 (------*------)
d -1.9216 -1.2000 -0.4784 (------*------)
e -0.2216 0.5000 1.2216 (------*------)
----------+---------+---------+-------
-1.0 0.0 1.0



Tukey's pairwise comparisons

Family error rate = 0.0500
Individual error rate = 0.00747

Critical value = 4.37

Intervals for (column level mean) - (row level mean)

a b c d

b -1.0176
0.6176

c -0.6176 -0.4176
1.0176 1.2176

d 0.1824 0.3824 -0.0176
1.8176 2.0176 1.6176

e -1.5176 -1.3176 -1.7176 -2.5176
0.1176 0.3176 -0.0824 -0.8824