Internal customer focus generally refers to the attention and service provided to the employees or departments within an organization who rely on the support of other parts of the organization to perform their duties. It's about ensuring that internal processes are designed and executed in a way that meets the needs and expectations of the next person or department in the workflow. This concept is important because it emphasizes that everyone in the organization is both a provider and a recipient of services, and that satisfying internal customers is key to achieving overall customer satisfaction.
References: While I can't reference the ASQ handbook directly, the concept of internal customer focus is widely recognized in quality management and organizational excellence frameworks. It is typically associated with creating a positive work environment that fosters collaboration, efficiency, and continuous improvement.

When analyzing output data from a continuous process, it is crucial to identify any anomalies or patterns that could indicate issues within the process. If the data shows an unusual variation or a shift in the process during a specific time frame, such as between noon and 3 p.m., it suggests that an event or change occurred that affected the process's performance. Asking if something out of the ordinary happened during this time can lead to identifying and addressing the root cause of the variation1.
In the context of process capability and analysis, ASQ emphasizes the importance of monitoring process parameters and identifying variations that may indicate problems within the process1. This approach is consistent with the principles of continuous improvement and quality management, where identifying and addressing unusual occurrences is key to maintaining process integrity and performance1.