Question

(2, 12), (4, 7), (5, 4) Will the correlation coefficient for these data points be positive or negative?
a. Positive
b. Negative

Answer 1

(2,12)  , (4,7)  -> coefficient is negative, because the x-coordinate is increasing and y-coordinate is decreasing

(4,7),  (5,4)  ->  coeficien is negative too - look above