Reliability data conversion — μ, σ → R(t)

Converts a mean and standard deviation (normal life distribution) plus a service life into a reliability R(t), by numerical integration of the standard normal density.

✓ validated against legacyoriginal: /calculators/c1_6.htm
Reliability data conversion — μ, σ → R(t) — original diagram from /calculators/c1_6.htm
z-value1.28
Reliability, R(t)89.98 %

Method & references

  • Reliability data conversion from a normal life distribution (mean, standard deviation) to R(t), by numerical integration.

The computation is a literal port of the original client-side JavaScript from /calculators/c1_6.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.

Reliability data conversion — μ, σ → R(t) — Engineering ABC