Seeking your opinion on the use of z-scores instead of original data for a correlation graph.
I have a paper showing a graph of two factors, that should correlate because the authors state that the multiple regression result shows that only variable X data explains changes in Y data.
However, instead of plotting the actual X data the authors have chosen to plot the z-scores. Would z-scores exaggerate the change in X values so the graph of the relationship with Y appears more convincing? Even on this graph it looks like the regression line is being riven by three extreme points, while the remaining 20 points appear completely random.
Looking forward to your advice.
Nayo
I have a paper showing a graph of two factors, that should correlate because the authors state that the multiple regression result shows that only variable X data explains changes in Y data.
However, instead of plotting the actual X data the authors have chosen to plot the z-scores. Would z-scores exaggerate the change in X values so the graph of the relationship with Y appears more convincing? Even on this graph it looks like the regression line is being riven by three extreme points, while the remaining 20 points appear completely random.
Looking forward to your advice.
Nayo