Google Charts
Google chart tools are powerful, simple to use, and free. Try out the rich gallery of interactive charts and data tools. Users may configure an extensive set of options to match the feeling of their website.
Scatterplots
A scatter plot or scattergraph is a type of mathematical diagram using Cartesian coordinates to display values for two variables for a set of data.
Line Graphs
A line chart or line graph is a type of chart which displays information as a series of data points connected by straight line segments.
Bar Graphs
A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent.