Originally Posted by
Harold74
I disagree. The second point speaks to the utility of correlation in the context being discussed. The third point speaks to things that may or may not be inferred by the trend of the graphs. The trend exhibited by a data set and and that data set's coefficient of correlation or separate things with different potential uses.
Your discussion of correlation is off target and meaningless. If power is equal to torque multiplied by angular velocity (i.e. RPM), and the angular velocity (RPM) is held constant, then all variation in the power are due to variation of the torque. This is as simple as it gets.