Positive, Negative, and Zero Correlation

Positive, negative, and zero correlation isn't something very difficult for students to grasp; but, I think it is something that is overlooked in schools.  Teachers assume that students already know these terms so they never introduce them to the students.  


Simply put, positive correlation is when a line increases on the x and y access as you move from left to right.


Negative correlation is when a line decreases on the y access and increases on the x access as you move from left to right.


Zero correlation is when there are random plots on a graph in no apparent order or pattern.  


Positive and Negative Correlation





Zero (or No) Correlation



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