#  Scatter Plot Maker

Instructions: Create a scatter plot using the form below. All you have to do is type your X and Y data. Optionally, you can add a title a name to the axes. X data (comma or space separated) Y data (comma or space separated) Type the title (optional) Name of X variable (optional) Name of Y variable (optional)

More about scatterplots: Scatterplots are bivariate graphical devices. The term “bivariate” means that it is constructed to analyze the type of association between to two interval variables $$X$$ and $$Y$$. The data need to come in the form of ordered pairs $$(X_i, Y_i)$$, and those pairs are plotted in a set of cartesian axes.

Typically, a scatterplot is used to assess whether or not the variables $$X$$ and $$Y$$ have a linear association, but there could be other types of non-linear associations (quadratic, exponential, etc.). The existence of a linear association is assess by establishing how tightly the data are around a straight line. Data pairs $$(X_i, Y_i)$$ that are loosely clustered around a straight line have a weak or non-existing linear association, whereas data pairs $$(X_i, Y_i)$$ that are tightly clustered around a straight line have a strong linear association.

A numerical (quantitative) way of assessing the degree of linear association for a set of data pairs is by calculating the correlation coefficient. 