Suppose that a tall child with arm span 120 cm and height 118 cm was added to the sample used in this study. What effect will this addition have on the correlation and the slope of the least-squares regression line?

a. Correlation will increase, slope will increase.

b. Correlation will increase, slope will stay the same.

c. Correlation will increase, slope will decrease.

d. Correlation will stay the same, slope will stay the same.

e. Correlation will stay the same, slope will increase.

Measurements on young children in Mumbai, India, found this least squares line for predicting y = height (in cm) from x = arm span (in cm):

ŷ = 6.4 + 0.93x

Select the best answer.