Basic sources of reliability data are:

The correct answer is D. I, II, and III. Option D is correct because all three listed items - in-plant testing, field data (actual performance data from deployed systems), and published literature/handbook data (such as MIL-HDBK-217 or similar reliability databases) - are recognized as the three fundamental sources of…

Data Collection and Use

Question

Options

AI and II only
BII and III only
CI and III only
DI, II, and III
IIn-plant testing.

How the community answered

(33 responses)

A
12% (4)
B
6% (2)
C
3% (1)
D
76% (25)
I
3% (1)

Explanation

Option D is correct because all three listed items - in-plant testing, field data (actual performance data from deployed systems), and published literature/handbook data (such as MIL-HDBK-217 or similar reliability databases) - are recognized as the three fundamental sources of reliability data in reliability engineering. No single source provides a complete picture; together they cover controlled testing environments, real-world usage, and historical/industry benchmarks.

Options A, B, and C are wrong because each excludes at least one legitimate source: reliability engineers routinely draw on all three, and omitting any one creates an incomplete framework for gathering failure rate and reliability estimates.

Memory tip: Think "I FP" - In-plant testing, Field data, Published data. These three cover the full lifecycle of a product - before release (in-plant), after release (field), and from prior art (published) - so any answer that drops one of the three is automatically incomplete.

Topics

#reliability data sources#in-plant testing#data collection#field data

Community Discussion

No community discussion yet for this question.

Full CRE Practice