True mean: 507.17
True median: 496.0
The actual standard deviation is 68.48. I might have been tempted to take the range, and divide by 6 (for six standard deviations). Hence, for this student's estimate of the range, I would have arrived at a calculation of s=67!
True sample standard deviation: 97.85. While the estimates above are off by a long-shot, the ideas used to estimate were quite sound! I might have used the range, and divided by 6.
