There was a 6/36 chance of getting a difference of 0, 10/36 for 1, 8/36 for 2, 6/36 for 3, 4/36 for 4, 2/36 for 5. You just multiply these chances with 18 to get the difference they should theoretically show. So experiment two was more correct..
Good stuff! Then u did relative frequencies of experiment 1 and 2... and compared which were closer to thge theoretical propabilities?
experiment 1: (for 0-5) 3/18 3/18 2/18, 4/18, 3/18, 3/18
0.17 0.17 0.11 0.22 0.17 0.17
experiemtn 2: (for 0-5) 4/18 4/18 3/18 3/18 2/18 2/18
0.22 0.22 0.17 0.17 0.11 0.11
theoreticals: for 0-5 6/36 10/36 8/36 6/36 4/36 2/36
0.16 0.27 0.22 0.16 0.11 0.055
As can be seen, the experments relative frequencies were closer to the theoretical propabilities calculated