Effects of an Outlier Refer to the accompanying scatterplot.

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

b. After identifying the 10 pairs of coordinates corresponding to the 10 points, find the value of the correlation coefficient r and determine whether there is a linear correlation.

c. Now remove the point with coordinates (10, 10) and repeat parts

(a) and (b).

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

Transcribed Image Text:

y 10 9 8 7 6 5 4 3 2 1 0 01 2 3 4 5 6 7 8 9 10 10 X