[From Fred Nickols (2013.07.16.1446 EDT)]
Thatâ€™s a riot.Â Completely missing the target isnâ€™t â€œstatistically significant.â€?
I didnâ€™t tumble to the extrapolation nature of the tortoise example.Â Thanks for the enlightenment, David.
Fred Nickols
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From: D GOLDSTEIN [mailto:davidmg@VERIZON.NET]
Sent: Tuesday, July 16, 2013 10:55 AM
To: CSGNET@LISTSERV.ILLINOIS.EDU
Subject: B:CP Chapter 2
[David Goldstein (2013.07.16.10:53)]
Again, try the two â€œLeading Questionsâ€? at the end of Chapter 2. You might like to speculate on what these questions are leading to.
Leading Questions:

The average of 6, 8, 12, and 14 is 10. But none of the arrows hit the target. The standard deviation of these values leads to zscores of 1.10, .55, 55, 1.10.Â None of these would be considered deviant enough from the mean of 10 to be â€œstatistically significant.â€?

This example shows the problem with extrapolation. The stone wall will stop the tortoise from continuing to move.