137
x
?
Index of Fit Distribusi Eksponensial Time To Failure (TTF)
Tabel 5.9 Perhitungan Index of fit Distribusi Eksponensial untuk TTF
Komponen Idler
i
t
i
x
i
=
t
i
F(t )
i )
y
i
x
i
.y
i
2
x
i
y
2
i
1
144.08
144.08
0.0565
0.0581
8.3721
20759.0464
0.0034
2
172.92
172.92
0.1371
0.1475
25.4975
29901.3264
0.0217
3
232.83
232.83
0.2177
0.2456
57.1762
54209.8089
0.0603
4
286.33
286.33
0.2984
0.3544
101.4677
81984.8689
0.1256
5
305.50
305.50
0.3790
0.4765
145.5635
93330.2500
0.2270
6
372.92
372.92
0.4597
0.6156
229.5654
139069.3264
0.3789
7
380.00
380.00
0.5403
0.7772
295.3475
144400.0000
0.6041
8
381.83
381.83
0.6210
0.9701
370.4263
145794.1489
0.9412
9
403.83
403.83
0.7016
1.2094
488.3773
163078.6689
1.4626
10
454.33
454.33
0.7823
1.5244
692.6010
206415.7489
2.3239
11
538.25
538.25
0.8629
1.9871
1069.5395
289713.0625
3.9484
12
552.08
552.08
0.9435
2.8744
1586.8830
304792.3264
8.2620
S
4224.90
4224.90
6.0000
11.2402
5070.8170
1673448.5826
18.3592
r
0.9227
?
Contoh perhitungan index of fit distribusi eksponensial TTF komponen idler i = 1 :
x1
=
t1
= 144.08
F(t1
)
=
=
i
-
0.3
n
+
0.4
1
-
0.3
12 +
0.4
=
0.7
12.4
=
0.0565
ln
?
1
?
y1
=
?
?
?
1
-
F(t1
)
?
?
=
ln
?
1
?
?
=
0.0581
?
1
-
0.0565
?
x1
.y1
=
(144.08
x
0.0581
)
= 8.3721
2
=
(144.08)²
= 20759.0464
 |