Which type of graph connects data points to show trends over time?

• A. Line graph
• B. Pie chart
• C. Intervals
• D. Sectors

Answer: (A)

Line graphs connect data points with a line to reveal how values change over time. This continuous line makes trends, direction, and the rate of change easy to see as you move along the time axis. It’s ideal for time-series data because you can spot whether measurements are increasing, decreasing, or fluctuating from one point to the next. Pie charts show parts of a whole at a single moment, which helps with composition but not with tracking changes over time. Sectors are the wedges in a pie chart, and intervals don’t describe a standard plot type for displaying trends over time. So the line graph is the best choice to show trends over time.