The expected probability of rolling an even number and one of a fair cube with faces numbered 1 through 6 is 1/2 when the cube was rolled 20 times an even number came up 15 times or 3/4 of the time when the same cube was rolled 100 times and even number came up 51 times or almost half the time why are the actual results closer than expected probability of one 1/2 when rolling the cube hundred times.