What is the mean absolute deviation of the data: 10, 17, 20, 12, and 16?
Round to the nearest whole number.

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.