What is Probability? Probability is the measure of how likely an event is. “ the ratio of the number of favourable cases to the number of all the cases “ or P(E) = Number of outcomes favourable to E Number of all possible outcomes of the experiment PROBABILITY is a measure of the degree to which an occurrence is certain [or uncertain]. Concept of Probability v The concept of Probability originated in the 16 th century when an Italian physician and mathematician J.Cardan wrote the first book on the subject , The Book on Games of Chance. Since its inception, the study of probability has attracted the attention of great mathematicians such as James Bernoulli (1654-1705) , v Probability theory is a very fasci...
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