2022-06-01 21:03:58
Probability
Probability is the mathematics of chance and luck. It has multiple real-world applications from engineering to medicine and beyond. Calculate and understand probabilities in a variety of situations.
It tells us how
likely an event is to happen. We can use words such as certain, likely, evens and impossible to describe the likelihood of events.
If an event is
certain to occur, that means it must happen 100% of the time. An example of this would be rolling a number less than 9 on a six-sided dice. This is certain as every number on a standard dice is less than 9.
More usually in mathematics, we denote probabilities in decimal or fraction form. This means that if something is 'certain' to happen, it would have a probability of 1.
Similarly an '
impossible' event can never occur, such as the chance of pulling a black ball from a bag of green balls. It simply cannot happen. In decimal notation, this is a probability of 0.
The terms 'likely' and 'unlikely' mean a probability of greater than and less
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