Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
conditional probability
This term is a technical expression used primarily in mathematics, statistics, and data science. It describes a specific relationship where the likelihood of an outcome is updated based on new information or a known prior condition. It is distinct from marginal probability, which considers the likelihood of an event regardless of any other variables.
In practical application, this concept is the foundation of Bayesian inference. It is typically expressed using the notation P(A|B), read as the probability of A given B. Because it is a specialized mathematical term, it is almost exclusively used in academic, technical, or professional analytical contexts rather than in casual conversation.
Meanings
The probability of an event occurring given that another event has already occurred.
The conditional probability of rain given that it is cloudy is higher than the general probability of rain.
Examples
The professor explained the concept of conditional probability using a deck of cards.
The professor explained the concept of conditional probability using a deck of cards.
We need to calculate the conditional probability of a system failure given a power surge.
Wait, so the conditional probability changes once we have more information?
The detective considered the conditional probability that the suspect was at the scene if the witness was telling the truth.
The detective considered the conditional probability that the suspect was at the scene if the witness was telling the truth.
Conditional probability is fundamental to the way Bayesian inference works.
Conditional probability is fundamental to the way Bayesian inference works.
I wonder what the conditional probability of rain is given these dark clouds.
I wonder what the conditional probability of rain is given these dark clouds.
The medical report discusses the conditional probability of a positive test result given the presence of the disease.
The medical report discusses the conditional probability of a positive test result given the presence of the disease.
Let us define the conditional probability of event A given event B.
Let us define the conditional probability of event A given event B.