In data presentation, which element shows trends over time by connecting data points with lines?

In data presentation, which element shows trends over time by connecting data points with lines?

• A. Line graph
• B. Baseline
• C. Vibration analysis
• D. Service visit

Answer: (A)

A line graph is used to show trends over time because it plots data points in chronological order and connects them with lines. Those lines reveal how values change from one time point to the next, making it easy to see upward or downward trends, patterns, and the rate of change. This continuous connection highlights progression over time more clearly than isolated points. Baseline is just a reference value used for comparison, not a chart element that shows how data changes over time. Vibration analysis refers to a diagnostic method for machinery health, not a way to present general data trends. A service visit is an event marker, not a visual representation of data over time.

A line graph is used to show trends over time because it plots data points in chronological order and connects them with lines. Those lines reveal how values change from one time point to the next, making it easy to see upward or downward trends, patterns, and the rate of change. This continuous connection highlights progression over time more clearly than isolated points.

Baseline is just a reference value used for comparison, not a chart element that shows how data changes over time. Vibration analysis refers to a diagnostic method for machinery health, not a way to present general data trends. A service visit is an event marker, not a visual representation of data over time.