Chapter 2 - Describing Distributions with Numbers - Chapter 2 Exercises - Page 69: 2.33c

With the outlier, the median value is 61. Without the outlier, the median value is the average of 54 and 61 (or 57.5). This shows the data set is not too terribly affected by removing the outlier.

In a dataset of 21 values, the median value is the 11th value. The 11th value in this set is 61. In a dataset of 20 values, the median value is the average of the 10th and 11th values. The 10th and 11th values, respectively, are 54 and 61.