Dealing with Missing Data. Exercises 82–85 ask you to calculate measures of center when one of the values is missing.
83. The mean size of four downloaded music files is 3 Mb (megabytes). The size of three of the files is as follows: 5 Mb, 2 Mb, 3 Mb. What is the length of the 4th music file?
3.1.83
2 Mb