Central Limit Theorem Applet
(© M. Pilant, 1997)
Needs Netscape 2.0 or later! Instructions:
  1. Select "More" to toss a coin 100 times, placing the result in the appropriate histogram slot.
  2. The actual distribution of the coin tosses is shown numerically in the upper left corner, and graphically in the upper right corner.
Frequency Distribution is shown in red.
Asymptotically, the distribution of the results (means) should approach that of the exponential A e -(x-m) 2 / s 2 where m is the mean, and s is the standard deviation, and A is a normalizing constant.
Source