Suppose that there was a data entry error such that a person who estimated the speed as 33 mile per hour accidentally recorded it as 38 miles per hour. Which of the statistics that you have obtained - median, range, mean, lower quartile and upper quartile - would have to be revised? For any statistic that would need to be revised, would you expect the value to go up or down? You do not need to calculate the new values. Explain your answer.