1.
Exploratory Data Analysis
1.3. EDA Techniques 1.3.3. Graphical Techniques: Alphabetic 1.3.3.26. Scatter Plot


Scatter Plot with No Relationship  
Discussion  Note in the plot above how for a given value of X (say X = 0.5), the corresponding values of Y range all over the place from Y = 2 to Y = +2. The same is true for other values of X. This lack of predictablility in determining Y from a given value of X, and the associated amorphous, nonstructured appearance of the scatter plot leads to the summary conclusion: no relationship. 