The ages of children at a summer camp are listed. 7, 9, 7, 10, 11, 10, 9, 8, 5 The mean and standard deviation of the data set were calculated. Another child enrolled in the camp who was 15. How did the addition of this outlier affect the data set?

A college class was surveyed to see how many countries outside the United States the students had visited. The results are listed below: 5, 0, 3, 1, 4, 0, 0, 1 The teacher calculated the mean and the median. Another student, who had visited 21 countries outside the United States, joined the class late. What effect did this outlier have on the data set?