Which of the following data points is a measure of how well a process is functioning?

Process yield is a critical measure of how well a process is functioning because it directly reflects the effectiveness and efficiency of that process in producing quality outputs. It represents the percentage of products or services produced that meet the required specifications or quality standards without defects.

A high process yield indicates that the process is operating smoothly, with minimal waste and rework, ensuring that most of the output is acceptable to customers. Conversely, a low process yield suggests that there are issues affecting the process, potentially pointing to inefficiencies, quality problems, or the need for improvements.

In contrast, customer market share, employee turnover rates, and product pricing do not provide direct insights into the operational efficiency or quality of a specific process. Market share reflects the competitive position of a company in the market, employee turnover rates relate to workforce stability, and product pricing involves strategic financial decisions. While these factors are important for business success, they do not specifically measure the effectiveness of a process on its own.