Refer to the exhibit. The red line represents the energy consumption of an industrial machine. Which two statements about the graphs are true? (Choose two.)

Question

Exhibit

Options

• AThe orange graph is expected to drop to zero for a brief period around the midpoint on the x axis.
• BThe red graph contains the raw data points.
• CThe green graph is the mean value of the data points.
• DThe green graph does not give us any valuable information.
• EThe orange graph has three values on the y-axis.

• A
  7% (2)
• B
  77% (23)
• D
  13% (4)
• E
  3% (1)

Explanation

Options B and C are correct because in standard data visualization for industrial monitoring, the raw/unprocessed sensor readings are plotted directly as the red line, while the green line represents the computed mean (average) of those readings - a common pattern in analytics dashboards where a smooth horizontal or slowly-changing line overlays noisy data to show the central tendency.

Why the distractors are wrong:

• A is false - a moving average or trend line (orange) smooths over fluctuations but would not drop to zero unless the underlying data did; there's no basis for expecting a zero-crossing at the midpoint.
• D is the opposite of true - the mean (green) is one of the most informative summary statistics, directly contradicting C.
• E is false - a continuous line graph has a continuous y-axis scale, not just three discrete values.

Memory tip: Think Red = Raw and Green = General average. Raw data is always the noisiest, most jagged line; the mean is the smoothest summary line sitting through the middle of the data cloud.

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