And Probability Math

Probability and statistics the branches of mathematics concerned with the laws governing random events including the collection analysis interpretation and display of numerical data.

And probability math. Our mission is to provide a free world class education to anyone anywhere. The best we can say is how likely they are to happen using the idea of probability. If p a p b then events a and b are equally likely to occur. This topic covers theoretical experimental compound probability permutations combinations and more.

Or means that the outcome has to satisfy one condition or the other condition or both at the same time. Let s look at one probability in these two ways. Probability and statistics are two branches of mathematics. Probability tells us how often some event will happen after many repeated trials.

Tails t we say that the probability of the coin landing h is. Heads h or. If we did not subtract the p a and b the answer would be 1 which we know is not true since the number 5 appears in neither event. Probability is the study of chance or the likelihood of an event happening.

The probability of an event a symbolized by p a is a number between 0 and 1 inclusive that measures the likelihood of an event in the following way. Directly or indirectly probability plays a role in all activities. Probability of an event of ways it can happen total number of outcomes p a of ways a can happen total number of outcomes example 1. There are also many aspects of probability theory that involve topics that are almost entirely mathematical.

There are six different outcomes. Many events can t be predicted with total certainty. For example we may say that it will probably rain today because most of the days we have observed were rainy days. Formula for calculating the probability of certain outcomes for an event.

Probability has its origin in the study of gambling and insurance in the 17th century and it is now an indispensable tool of both social and natural sciences. Probability of a coin landing on heads. When a coin is tossed there are two possible outcomes. Notice in this problem that the number 2 appears in both event a and event b.

Probability p a p b p a and b 3 6 3 6 1 6 5 6. In probability there s a very important distinction between the words and and or. If p a p b then event a is more likely to occur than event b. How likely something is to happen.