What type of tool might a systems analyst use to identify a relationship between two variables? What tool is useful for identifying and prioritizing causes of problems?
What will be an ideal response?
The XY chart, or scatter diagram, is a tool that can show correlation between two variables. For example, suppose you are getting complaints about network response time, and you want to determine the cause. You would try to identify variables, such as the number of users, to look for a correlation or pattern.
A Pareto chart is a widely used tool for identifying and prioritizing causes of problems. Named for a nineteenth century economist, a Pareto chart is drawn as a vertical bar graph, as shown in Figure 2-17. The bars, which represent various causes of a problem, are arranged in descending order, so the team can focus on the most important causes.
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