What is a triple line graph?
A triple line graph is a type of line chart that displays three lines on the same graph to compare changes across three data sets over time or across categories. It lets you analyze several trends at once and see how they relate to or differ from each other. Each line has a different color and is identified in the legend.
How to make a triple line graph
- Enter your x-axis labels (dates, months, tests, etc.) in the first column.
- Fill in the three line columns with the values for each data set, or paste all four columns at once.
- Rename each line in the table header so the legend is clear.
- Set the title and axis labels, then choose colors, line styles and a theme in the Design tab.
- Download the graph as PNG, JPG, SVG or PDF, or copy it into your report.
Why use a triple line graph?
- Compare three variables over the same time period.
- Identify trends, overlaps or gaps between the data sets.
- Show complex relationships in a simple visual form.
- Track three metrics of the same project in one view.
Examples of triple line graphs
- Sales of three products over a year
- Grades of three students across exams
- Morning, afternoon and night temperatures during a week
- App downloads from iOS, Android and web
- Steps, calories burned and heart rate over a workout
- Three scenarios (best, expected, worst case) in a forecast
Tips for a clear triple line graph
- Choose a palette with three distinct colors. “Classic” and “Corporate” work well.
- Give each line a different point shape (circle, square, triangle).
- Switch on Add trend line to compare the overall direction of each data set.
- Put the legend at the bottom if the lines are crowded at the top of the chart.
Comparing just two data sets? Use the double line graph maker. Need four or more? Use the multiple line graph maker.