Refer to the accompanying scatterplot.

a. examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y.

b. find the value of the correlation coefficient r and determine whether there is a linear correlation.

c. remove the point with coordinates (10,2) and find the correlation coefficient r and determine whether there is a linear correlation.

d. what do you conclude about the possible effect from a single pair of values