[R] Size of observations

From: Amit Kabiri <akabiri_at_012.net.il>
Date: Tue 16 May 2006 - 16:27:03 EST

Hi All  

I had to assure the randomness of backgammon game's two dices.  

I took 8,000,000 observations and found that one of the dices is not uniform distributed.  

I took 80,000,000 observations and found that the dice is uniform distributed.  

In both tests I used Pearson Chi Square test.  

My questions:  

  1. How many observations should I take?
  2. How much the 80,000,000 observations test is batter from the 8,000,000 test?

Thanks in advance for your help  

Amit Kabiri


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