A scatter plot is a graph that shows the relationship between two sets of data. To create a scatter plot in Excel, you first need to create two columns of data. The first column should contain the data for the x-axis, and the second column should contain the data for the y-axis. Once you have created the two columns of data, you can create the scatter plot by clicking on the Insert tab and selecting the Scatter Chart icon. Excel will then create a graph that shows the relationship between the two sets of data.