A line chart or line graph is essentially a connection between various data points "markers" by line segments. A line graph has two axes: X-axis typically represent time periods and Y-axis has a quantitative value.
View more examples of line charts.
Infogram is a free online chart maker that offers the most widely used line chart types (line chart, area chart, and multiple axis line chart). Here’s how they differ:
Line chart – Used to display events that occur over a continuous interval or time span. Example: Number of visitors per month.
Area chart – A type of line charts where the area below the line is filled with a specific color. Example: Sales per year.
Multiple axis line chart - A line chart displaying two variables with different units of measurement plotted on two separate Y-axes. Example: Temperature and Rainfall.
A line chart is commonly used to show trends over time, often displaying relationships between two variables.
A typical line chart could show the number of visitors to a site or the stock price of a company changing over time.
Start the Y-axis at zero - Otherwise your viewer might draw inaccurate conclusions.