Final answer:
RTY is a measure in Lean Six Sigma for evaluating the probability of a process sequence producing defect-free units. It is calculated by multiplying the yields of all process steps, reflecting the effectiveness of each. A higher RTY indicates a more efficient series of processes.
Step-by-step explanation:
Rolled Throughput Yield (RTY) is a Lean Six Sigma measure which is used for assessing the probability of a series of processes producing a defect-free unit. Unlike percent yield, which is used in chemistry to describe the amount of product obtained from a reaction as compared to the theoretical yield, RTY is used to evaluate a process or series of processes in a business or manufacturing context. RTY takes into account the efficiency and effectiveness of each step in a process to determine the likelihood that the entire process sequence will produce an item without defects.
To calculate RTY, one must multiply the yields of each process step, where each step's yield is defined as the number of good units produced divided by the number of total units going into a specific process step. A final RTY close to 1, or 100%, indicates a highly effective series of processes with low defect rates, whereas a lower RTY signals a need for process improvement.