After finishing the last few minutes of the latest Hans Rosling documentary we've been watching, we returned to Jared's long-term project. I first reviewed the principle of Standard Deviation, and stressed that the more common interpretation requires the distribution of the data to be described by a bell curve. For Jared's project, this is not the case, so if we want to examine the data in terms of standard deviations from the mean, then we must invoke Chebyshev's theorem, which states that 75% of the data lie within 2s and 89% within 3s.