171
?
Index of Fit Distribusi Normal Time To Failure (TTF)
Tabel 5.36 Perhitungan Index of fit Distribusi Normal untuk TTF Komponen
Chain
i
t
i
x
i
=
t
i
F(t )
i )
y =
i =
z
i
x .z
i .z
i
2
x
i
z
2
i
1
195.75
195.75
0.1094
-1.2299
-240.7449
38318.0625
1.5126
2
498.83
498.83
0.2656
-0.6261
-312.3170
248831.3689
0.3920
3
509.75
509.75
0.4219
-0.1971
-100.4713
259845.0625
0.0388
4
608.17
608.17
0.5781
0.1971
119.8698
369870.7489
0.0388
5
796.17
796.17
0.7344
0.6261
498.4813
633886.6689
0.3920
6
873.33
873.33
0.8906
1.2299
1074.0726
762705.2889
1.5126
S
3482.00
3482.00
3.0000
0.0000
1038.8905
2313457.2006
3.8868
r
0.9739
?
Index of Fit Distribusi Lognormal Time To Failure (TTF)
Tabel 5.37 Perhitungan Index of fit Distribusi Lognormal untuk TTF
Komponen Chain
i
t
i
x
i
=
ln(
t )
i )
F(t )
i )
y =
i =
z
i
x .z
i .z
i
2
x
i
z
2
i
1
195.75
5.2768
0.1094
-1.2299
-6.4898
27.8450
1.5126
2
498.83
6.2123
0.2656
-0.6261
-3.8895
38.5922
0.3920
3
509.75
6.2339
0.4219
-0.1971
-1.2287
38.8618
0.0388
4
608.17
6.4105
0.5781
0.1971
1.2635
41.0939
0.0388
5
796.17
6.6798
0.7344
0.6261
4.1822
44.6199
0.3920
6
873.33
6.7723
0.8906
1.2299
8.3290
45.8642
1.5126
S
3482.00
37.5856
3.0000
0.0000
2.1667
236.8771
3.8868
r
0.9188
Berikut ini adalah ringkasan nilai index of fit (r) TTF hasil keempat distribusi
di atas :
Tabel 5.38
Ringkasan Index of Fit TTF Chain
KOMPONEN
Distribusi TTF
Index Of Fit
Chain
Weibull
0.9548
Eksponensial
0.9080
Normal
0.9739
Lognormal
0.9188
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