X

Y

3

2

5

4

4

5

2

5

0

3

2

0

1

2

Compute the correlation for the data below. Is it statistically significant? (assume a non- directional hypothesis, and alpha = .01)

Add a constant of 5 to each X score, and recompute the correlation. Does the correlation change? Why would you have anticipated this finding?

Add the score pair (X=12,Y=8) and recompute the correlation. Why does adding one pair of scores change the correlation so much?