ABCDEFGHIJKLMNOPQRSTUVWXYZ
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Table 1. Please enter your ships in column B and failure counts from each cohort in columns C-T
2
Period
Units Shipped
Peroid 1Period 2Period 3Period 4Period 5Period 6Period 7Period 8Period 9Period 10Period 11Period 12Period 13Period 14Period 15Period `6Period 17Period 18Row Sums
3
147137813542220000000047
4
2414347656121100001041
5
345249675602310000045
6
43916477332410001039
7
5432666855221000043
8
648147887532210048
9
741051384711101041
10
84023710572300039
11
9450106688430045
12
104127753930137
13
113722861031234
14
12392367105336
15
133622636625
16
14271145617
17
1530134614
18
163815612
19
1732066
20
184211
21
Column Sums7111712173728334044474644413244312937
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23
Table 2. Kaplan-Meier nonparametric max. likelihood reliability estimate from ships and grouped failure or return counts in body of table 1
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Age tInstalled baseWithdrawnDeathsAt riskK-M R(t)S&R R(t) table 4
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071111
26
164541257110.9648382560.9787234043
27
254626736450.85563950760.8292682927
28
3416261045460.69266055380.7333333333
29
430216984160.52948571180.5641025641
30
5191101013020.35240605320.2857142857
31
610511751910.21402671290.2857142857
32
7593431050.12637767810.1951219512
33
837319590.085679781780.01176470588
34
917416370.048629065330.01176470588
35
107010170.020023732780
36
1121470.0085815997650
37
1220020.0085815997650
38
1320020.0085815997650
39
1410120.0042907998820
40
1510010.0042907998820
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16001100
42
17000000
43
18000000
44
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Table 3. Ratios of sums of ships and returns for "pool adjacent violators" majorization
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PeriodShipsReturns
47
14710.02127659574
48
24170.090909090910.1707317073
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345120.15037593980.22093023260.2666666667
50
439170.21511627910.2880.34523809520.4358974359
51
543370.34418604650.43452380950.51968503940.65853658540.8604651163
52
648280.38783269960.46759259260.53714285710.63076923080.71428571430.5833333333
53
741330.44407894740.52140077820.5879629630.67251461990.74242424240.68539325840.8048780488
54
840400.50872093020.58585858590.652343750.73459715640.80232558140.78294573640.90123456791
55
945440.56298200510.63742690060.70099667770.777343750.83870967740.83333333330.92857142860.98823529410.9777777778
56
1041470.61860465120.69190600520.75438596490.82828282830.88759689920.89302325580.9820359281111
57
1137460.66809421840.74047619050.80211081790.8742514970.93220338980.944444444411111
58
1239440.70355731230.77342047930.83253588520.90080428950.95508982040.9690721649111111
59
1336410.73247232470.80.85682819380.92176039120.9729729730.98776758411111111
60
1427320.75395430580.81992337160.87525987530.93807339450.9874055416111111111
61
1530440.78964941570.85507246380.90998043050.972103004311111111111
62
1638310.79120879120.85254237290.90346083790.9603174603111111111110.8157894737
63
1732290.79671150970.85530546620.90361445780.95708955220.997987927611111111110.85714285710.90625
64
1842370.80168776370.85692771080.90208667740.95155709340.98886827461111111110.99295774650.86607142860.89189189190.880952381
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66
67
Table 4. Maximum likelihood estimates of cumulative distribution function G(t), S&R reliability function R(t), and actuarial return rate function a(t)
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Ages don't have to be equally spaced; actuarial return rate a(t) computation is per age unit
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Age tactuarial a(t)cdf G(t)S&R R(t)
<-Ships and Returns reliability function
70
10.021276595740.021276595740.97872340430.02127659574
71
20.15270413570.17073170730.82926829270.090909090910.1707317073
72
30.11568627450.26666666670.73333333330.15037593980.22093023260.2666666667
73
40.23076923080.43589743590.56410256410.21511627910.2880.34523809520.4358974359
74
50.49350649350.71428571430.28571428570.34418604650.43452380950.51968503940.63076923080.7142857143
75
600.71428571430.28571428570.38783269960.46759259260.53714285710.63076923080.71428571430.5833333333
76
70.31707317070.80487804880.19512195120.44407894740.52140077820.5879629630.67251461990.74242424240.68539325840.8048780488
77
80.93970588240.98823529410.011764705880.50872093020.58585858590.652343750.73459715640.80232558140.78294573640.90123456790.9882352941
78
900.98823529410.011764705880.56298200510.63742690060.70099667770.777343750.83870967740.83333333330.92857142860.98823529410.9777777778
79
101100.61860465120.69190600520.75438596490.82828282830.88759689920.89302325580.9820359281111
80
11#DIV/0!100.66809421840.74047619050.80211081790.8742514970.93220338980.944444444411111
81
12#DIV/0!100.70355731230.77342047930.83253588520.90080428950.95508982040.9690721649111111
82
13#DIV/0!100.73247232470.80.85682819380.92176039120.9729729730.98776758411111111
83
14#DIV/0!100.75395430580.81992337160.87525987530.93807339450.9874055416111111111
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15#DIV/0!100.78964941570.85254237290.90208667740.95155709340.98886827461111111110.9929577465
85
16#DIV/0!100.79120879120.85254237290.90208667740.95155709340.98886827461111111110.99295774650.8157894737
86
17#DIV/0!100.79671150970.85530546620.90208667740.95155709340.98886827461111111110.99295774650.85714285710.8918918919
87
18#DIV/0!100.80168776370.85692771080.90208667740.95155709340.98886827461111111110.99295774650.86607142860.89189189190.880952381
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89
90
91
92
93
94
95
96
97
98
99
100