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


Scatter Plot Showing a Strong Negative Correlation  
Discussion  Note in the plot above how a straight line comfortably fits through the data; hence there is a linear relationship. The scatter about the line is quite small, so there is a strong linear relationship. The slope of the line is negative (small values of X correspond to large values of Y; large values of X correspond to small values of Y), so there is a negative corelation (that is, a negative correlation) between X and Y. 