A run chart is primarily used to observe data trends over time without control limits.

A run chart is primarily used to observe data trends over time without control limits.

• A. True
• B. False
• C. Only for quality assurance of products in development
• D. It requires control limits to be interpretable

Answer: (A)

Tracking data in the order they are collected lets you see how a process behaves over time—notice trends, shifts, or cycles as more data come in. A run chart is built for this purpose: it plots each observation in time sequence so patterns over time become visible. It doesn’t rely on control limits to interpret the chart; those limits are a feature of control charts, not run charts. So the statement is true because a run chart focuses on detecting trends or changes over time without requiring control limits. You can still add a central line or target line to aid interpretation, but control limits aren’t a defining part of a run chart.

Tracking data in the order they are collected lets you see how a process behaves over time—notice trends, shifts, or cycles as more data come in. A run chart is built for this purpose: it plots each observation in time sequence so patterns over time become visible. It doesn’t rely on control limits to interpret the chart; those limits are a feature of control charts, not run charts. So the statement is true because a run chart focuses on detecting trends or changes over time without requiring control limits. You can still add a central line or target line to aid interpretation, but control limits aren’t a defining part of a run chart.