In the described plot, what does the y-axis represent?

In the described plot, what does the y-axis represent?

• A. Lifts
• B. Dry density value
• C. Depth
• D. Station numbers

Answer: (D)

The variable being tracked along the vertical axis is the station number, because the plot is designed to index data by location along the alignment. Each point refers to a specific station, and labeling the vertical axis with those station numbers lets you see how data changes as you move from one station to the next. The actual measured quantity (such as depth, density, or lifts) would appear along the horizontal axis, or in a separate plot, rather than the vertical axis. So the y-axis represents station numbers because that’s how this plot ties data to location along the project line.

The variable being tracked along the vertical axis is the station number, because the plot is designed to index data by location along the alignment. Each point refers to a specific station, and labeling the vertical axis with those station numbers lets you see how data changes as you move from one station to the next. The actual measured quantity (such as depth, density, or lifts) would appear along the horizontal axis, or in a separate plot, rather than the vertical axis. So the y-axis represents station numbers because that’s how this plot ties data to location along the project line.