Introducing Line Charts: Visualizing Change Over Time
What is a line chart?
Imagine you are drawing a story of how something changes over time. A line chart does exactly this. It’s a type of graph that shows how data points change. Think of it like connecting dots on a graph to form a line. These dots represent your data points at different times. Some examples of common line chart uses are looking at how sales numbers change over time.
Why use line charts?
Line charts are great for seeing trends and changes.
E.g. Tracking VC Funding over the years
E.g. Tracking the number of pizzas a store sells in a year
By displaying the data points over time, it allows us to track changes over time
You’ll often find the time (month/years/days) goes along the bottom of the chart, on the horizontal axis (x-axis) and what you are measuring (like revenue, total number of pizzas) that goes up on the side, vertical axis (y-axis).
