If the point in the upper left comer of the scatterplot show

If the point in the upper left comer of the scatterplot shown below is removed, what will happen to the correlation (r) and the slope of the line of best fit (b)? A. r will decrease and b will increase. B. r will increase and b will decrease. C. Both will increase. D. Both will decrease.

Solution

The correlation will increase on removing this outlier because line will be a much better fit. slope will also increase because this point is the backside of line upwards, when this point is removed, the line should slope higher.

Both increase