Definition Probability

Probability is a measure of how likely an event will occur. In other words: the probability is the chance of an event to happen. If the weather report speaks of a 30% probability of rain, it means that it is actually less likely that it will rain, than it is likely that it will not rain. In other words, the chances of it raining are 3 to 10. 

Please note that the definitions in our statistics encyclopedia are simplified explanations of terms. Our goal is to make the definitions accessible for a broad audience; thus it is possible that some definitions do not adhere entirely to scientific standards.

Entries starting with P