What is the Meaning & Definition of probability

The probability is the possibility that exists among several possibilities, that a fact or condition may occur. The likelihood, then, measures the frequency with which one gets a result in opportunity to carry out an experiment on which are all possible results thanks to the stability conditions posed by the context in advance. The scientific study of the probability, in contrast to what has happened with other mathematical issues (because obviously both disciplines are closely related to each other), is not a concern that goes back to ancient times, for example, times in which most of the great thinkers apparently occupied their thoughts on other issues more determinants at the time. Then, study and deepening on the question of the likelihood, can say that it is rather a modern event. The great ally of the probability is the so-called theory of probability, since thanks to what it postulates and argues, is that humans can anticipate that some potential events occur finally. The above theory is very used and consulted by disciplines such as statistics, philosophy, mathematics and science, to draw conclusions regarding the potential events that occupy them. The theory of probability is a mathematical model that addresses of analyzing random phenomena; This means the opposition with respect to the already certain phenomena, which are those in which the result of the experiment is carried out, according to certain conditions, produces a unique and predictable outcome, that will be repeated many times to revert to be made, provided that the same conditions are respected. For example, water that is heated to 100 degrees Celsius at sea level becomes steam: this is a phenomenon already determined. Meanwhile, random ones, which are that the probability theory, deals can be done thousands of times under the same circumstances but will always result in a varied set of alternatives. A clear example is the different possibilities and combinations that allows the release of dice when you're playing to the General. Perhaps what I explained them sounds quite abstract for our daily life; However, the likelihood is absolutely immersed in our day to day as part of a society and certain community, since in risk analysis and trade of raw materials, the probability, has an incidence and vital importance. To cite just one example, but that is either graphic, the majority of Governments, ever, they have cast hand of probabilistic methods, to attend a future scenario in which the well-being of its people can enter at serious risk. Issues inherent in the care of the environment or the propensity to external attacks that can be received from any neighboring nation, can be the object of a probabilistic measurement at some point. In this sense, the application of computer models allowed, within the framework of sensible policies and long-term, include more unexpected variables in the calculation of the probability of an event. For example, when the result of a harvest scheduling, they are generally considered in the reasoning of the odds the surface to seeding, seed type, the number of workers, the irrigation conditions, however, by the current computers, can include real imponderables, such as long droughts or, on the contrary, waterlogging and floods. In this context, the idea modern, very applied by different Sciences, to match the idea of probability with the concept of risk. This may seem alarmist, but it turns out to be a phenomenon of very common use in medicine. Thus, we know that if a person is smoking, has high cholesterol and physical activity does not have a more likely (i.e. an increased risk) to suffer a heart attack or a stroke. Through the application of the theory of probability, we will know that it is necessary to invest great effort in combating smoking and promote lifelong healthy to reduce the rate of heart problems and avoid long-term health complications. We see that the idea of probability is part of day to day, from the simple fact of crossing a street and define their risks, to the complex design of a journey through space.