Scatter plot

http://images.google.com/imgres?imgurl=http://www.me-jaa.com/mejaa21Mar2009/scatterplot-diag1.gif&imgrefurl=http://www.me-jaa.com/mejaa21Mar2009/scatterplot.htm&usg=__faXSkmnsVPQNgBhJT9KKF_GuRi0=&h=426&w=531&sz=30&hl=en&start=1&um=1&itbs=1&tbnid=4Nn3v8MVd8GisM:&tbnh=106&tbnw=132&prev=/images%3Fq%3Dheight%2Band%2Bweight%2Bscatter%2Bplot%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:*%26tbs%3Disch:1

A scatter plot shows the relationship between two variables by displaying data points on a graph. The explanatory variable is usually plotted on the x-axis while the response variable is plotted on the y-axis. This specific scatter plot displays the relationship between height and weight. It is a positive relationship because as x increases, so does y. Also, it is a rather strong relationship because the data points remain in close proximity to one another on the line.