Graph description: Figure 1. Distribution of the number of heads in 12 tosses of a coin, or for the number of negative differences out of 12 if positive and negative differences are equally likely (Binomial distribution, n = 12, p = 0.5)

A graph with the horizontal axis labeled "Number of heads" and numbered 0, 1, 2, 3, up to 12, and the vertical axis labelsd "Probability" and numbered 0, 0.05, 0.1, 0.15, 0.2, 0.25.

At each integer number of heads there is a vertical line from zero to the probability, with heights as follows: Number of heads = 0, Probability = 0.0002441, Number of heads = 1, Probability = 0.0029297, Number of heads = 2, Probability = 0.0161133, Number of heads = 3, Probability = 0.0537109, Number of heads = 4, Probability = 0.1208496, Number of heads = 5, Probability = 0.1933594, Number of heads = 6, Probability = 0.2255859, Number of heads = 7, Probability = 0.1933594, Number of heads = 8, Probability = 0.1208496, Number of heads = 9, Probability = 0.0537109, Number of heads = 10, Probability = 0.0161133, Number of heads = 11, Probability = 0.0029297, Number of heads = 12, Probability = 0.0002441.

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This page maintained by Martin Bland.
Last updated: 23 July, 2009.