The following bivariate data set contains an outlier.

x	y
35.3	-448.7
64.3	-2945.7
33.4	-839.8
30.3	-2391.9
5.8	451.7
56.9	1860.9
19.6	-62.7
30.2	-1911.6
10.3	1793.5
22.3	1462.7
57.5	312.3
65.8	-80.4
22.3	-52.8
31.5	-1025.1
245.8	834.2

What is the correlation coefficient with the outlier?
r_w =

What is the correlation coefficient without the outlier?
r_wo =

Would inclusion of the outlier change the evidence for or against a significant linear correlation?


Question for thought: Would you always draw the same conclusion with the addition of an outlier?