This type of data looks nothing like a normal distribution, as each data point can take only one of two possible values. Binary data like this is often analyzed using a different probability distribution, called the Bernoulli distribution, which represents the result of a single yes/no-type experiment or question, such as from a survey or poll. This distribution is useful in a wide variety of situations, such as analyzing advertising campaigns (whether someone purchased or not), clinical trials (responded to treatment or not), and A/B testing (clicked or not).
