According to the definition of Rolled Throughput Yield which of these items best describe the purpose of RTY?

Question

Options

• AA function of Y=f(x)
• BAccounts for losses due to rework and scrap
• CIsolates the increase throughput
• DDetermines incremental Growth

• A
  2% (1)
• B
  84% (49)
• C
  9% (5)
• D
  5% (3)

Explanation

Rolled Throughput Yield (RTY) measures the probability that a unit passes through all process steps defect-free on the first attempt, making option B correct because it captures the cumulative hidden cost of rework and scrap that simple first-pass yield metrics ignore - RTY multiplies the individual yields of each process step together, exposing the "hidden factory" of quality losses.

Why the distractors are wrong:

• A (Y=f(x)) describes the Six Sigma transfer function concept - how outputs relate to inputs - which is a separate analytical tool unrelated to RTY's measurement purpose.
• C (Isolates the increase in throughput) is wrong because RTY doesn't isolate increases; it reveals decreases in effective yield caused by defects accumulating across steps.
• D (Determines incremental growth) confuses RTY with a business growth metric - RTY is a quality/process efficiency measure, not a revenue or capacity growth tool.

Memory tip: Think of RTY as a "chain of sieves" - each process step is a sieve, and rework/scrap are what falls through. RTY tells you how much of your product made it through all sieves cleanly. The word Rolled is your clue: yields are rolled together (multiplied), and anything lost to rework or scrap reduces that final number.

No community discussion yet for this question.