If the sample means and standard deviations for x and y remain unchanged, what happens to the least-squares estimate of the regression slope as the sample correlation between c and y increases? O A. The slope increases. O B. The slope decreases. O C. The slope does not change. O D. Not enough information is given. How does the correlation coefficient r for the data in Plot A compare with the correlation coefficient r for the data in Plot B? Plot A Plot B 40 10 15 20 5 10 15 20 X X O A. r in Plot A is less than r in Plot B. O B. r in Plot A is equal to r in Plot B. O C. r in Plot A is greater than r in Plot B. O D. r in Plot A is not comparable with r in Plot B. O E. Not enough information exists to compare the two r values