Spacescope, Inc. Reliability
Exponential Probability Distribution
Enter data only in yellow-shaded cells.
Failure rate per hour (λ) =
0.0000165
Cumulative Failure Reliability
Hours Probability F(x) 1-F(x)
0 0.000000 1.00000
5000 0.079189 0.92081
10000 0.152106 0.84789
15000 0.219250 0.78075
20000 0.281076 0.71892
25000 0.338007 0.66199
30000 0.390429 0.60957
65000 0.657848 0.34215
70000 0.684942 0.31506
75000 0.709891 0.29011
80000 0.732865 0.26714
85000 0.754019 0.24598
90000 0.773498 0.22650
95000 0.791434 0.20857
115000 0.850057 0.14994
120000 0.861931 0.13807
125000 0.872864 0.12714
130000 0.882932 0.11707
135000 0.892202 0.10780
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.900
1.000
0 20000 40000 60000 80000 100000 120000 140000 160000
Probability
Cumulative Failure Probability
0.400
0.600
0.800
1.000
1.200
Probability
Hours to Failure