Bar Graphs and Line Graphs

A bar graph is a visual representation of data using bars of different heights or lengths to show the quantity of each category.

A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments.

Bar graphs are best for comparing different categories of data.

Line graphs are best for showing trends over time or continuous data.

To read a bar graph, look at the height of each bar to determine the value it represents.

To read a line graph, follow the line to see how the value changes over time.

The x-axis typically represents the independent variable or categories.

The y-axis typically represents the dependent variable or values.

The title explains what the graph is about and summarizes the data being presented.

A key or legend explains the symbols, colors, or patterns used in the graph.