We found overwhelming evidence for a "same-side" bias predicted by Diaconis and colleagues in 2007: If you start heads-up, the coin is more likely to land heads-up and vice versa., One side of the coin is, in fact, more likely to come up than the other, according to a team of scientists led by University of Amsterdam PhD candidate František Bartoš. But that side is neither, This tutorial explains how to calculate the probability of getting at least one head during a certain number of coin flips, including examples., A “fair coin” is one which has an equal probability of landing heads or tails in a coin toss. In contrast, an unfair coin is one which is weighted or filed so that it has a greater chance of landing on one side than the other., Coin Toss Probability helps us to determine the likelihood of getting heads or tails while flipping a coin. Before diving into the formula, it's essential to understand that when a fair coin is tossed, there are only two possible outcomes: Heads (H) and Tails (T)., The probability of getting heads on a fair coin toss is 1/2 or 50%. This means that there's an equal chance of getting heads or tails..