Slightly different measures of the relationship between the two.
In correlation analysis (r = 0.42) both Y and X are assumed to be random variables. In linear regression (Percent of Variation = 20%) Y is assumed to be a random variable and X is assumed to be a fixed variable.
When using hard and accurate measurement data…this is a weak relationship. For social science this could be maybe be considered a medium relationship depending on how well that sample represents the population.
Thanks. So I can say there’s a relationship, but a weak one. I guess I would need to know how psychopathy correlates with the general population, in order to say how significant is the correlation between narcissism and psychopathy.
At +4.2 there is a positive correlation between the two variables but as it is under 0.5 it would not be significant enough to make any bold statement about to give support to an argument. But it would be worth mentioning. The range is always between -1 and +1 so the further from zero shows the positive or negative correlation between the variables. Anything above +0.7 or -0.7 would merit further study.