Which of the following is described in the statement below? "It shows the history and pattern of variation. It is a line graph that shows data points plotted in the order in which they occur. They…

A cause and effect (Ishikawa or fishbone) diagram maps the root causes contributing to a specific effect, and does not display data points over time.

A histogram is a bar chart that shows the frequency distribution of data within defined ranges, not a sequential time-ordered line graph.

A run chart is specifically defined as a line graph where data points are plotted in the order they occur, making it the correct tool for observing process variation over time and identifying trends, shifts, or improvements. Unlike control charts, run charts do not include control limits, and they are the primary tool used for trend analysis in quality management. The description in the question - sequential data points, trends, variation over time - matches the run chart definition exactly.

A Pareto chart is a combined bar and line chart that ranks categories by frequency to identify the most significant factors, not a time-series trend tool.