How is a failed test plotted on the graph?

How is a failed test plotted on the graph?

• A. X with a circle around it
• B. X alone
• C. Circle around a dot
• D. Triangle with an X inside

Answer: (A)

In this plotting convention, a failed test is shown as a circled X. The circle adds a clear visual modifier to the X, signaling nonconformance at a glance and making failed results stand out on a dense graph. The X marks the data point, and the surrounding circle distinguishes the failure status from other symbols that might indicate a pass or neutral result. A plain X alone can be ambiguous, and the other symbols aren’t standard indicators for a failed result, so the circled X is the most recognizable choice for flagging failures.

In this plotting convention, a failed test is shown as a circled X. The circle adds a clear visual modifier to the X, signaling nonconformance at a glance and making failed results stand out on a dense graph. The X marks the data point, and the surrounding circle distinguishes the failure status from other symbols that might indicate a pass or neutral result. A plain X alone can be ambiguous, and the other symbols aren’t standard indicators for a failed result, so the circled X is the most recognizable choice for flagging failures.