Following is a random sample of price per piece of plywood, X, and quantity sold, Y (in

Question:

Following is a random sample of price per piece of plywood, X, and quantity sold, Y (in thousands):
Price per Piece (x) Thousands of Pieces Sold (y)
$6 ...............80
7 ...............60
8 ...............70
9 ...............40
10 ............... 0
a. Compute the covariance.
b. Compute the correlation coefficient.