The scatterplot reveals a point outside the point pattern. Copy the data to a new location in the worksheet. You now have 2 sets of data.

Data that are more tha 1.5 IQR below Q1 or more than 1.5 IQR above Q3 are considered outliers and must be investigated.

It was determined that the outlying point resulted from data entry error. Remove the outlier in the copy of the data.

Make a new scatterplot linked to the cleaned data without the outlier, and add title ("Scatterplot without Outlier,")trendline, and regression equation label.

Compare the regression equations of the two plots. How did removal of the outlier affect the slope and R²?

X Y

22 3872

48 9312

37 5217

30 4230

24 4536

10 1820

42 8274

30 121

41 6314

29 3828

16 2448

36 6156

45 7515

11 1309

31 3534

26 4576

31 5797

33 4983

46 6670

22 2464

13 2197

22 3278

32 5408

49 7497

35 5705