Bar Graphs, Line Graphs, & Dot Plots

A bar graph is a visual way to show information using bars of different heights to represent numbers.

A line graph shows how something changes over time by connecting points with a line.

A dot plot is a simple way to display data using dots to represent each value.

You look at the height of the bars to see how many or how much each category has.

The x-axis is the horizontal line that usually shows categories or time.

The y-axis is the vertical line that usually shows numbers or amounts.

You look for the tallest bar, which shows the month with the most birthdays.

2 more students were born in June.

The purpose of a line graph is to show trends or changes over time.

You add all the numbers together and then divide by how many numbers there are.