Answer:
(a) -0.99
Step-by-step explanation:
You want an estimate of the correlation coefficient of points that nearly lie on a line with negative slope.
Sign
The points tend downward as X increases. This means the sign of the correlation is negative. (Eliminates choices C and D.)
Degree
The points nearly lie on a line, or lie on two nearly parallel lines. This means their degree of correlation is very high (near 1). (Eliminates choice B)
The best estimate of the correlation coefficient is -0.99, choice A.
