I have taken an example from my statistical notes 1 and 2 to show the process of calculating the marginal, conditional and joint probabilities using the data presented in a contingency table, also ...

Joint probability is the probability of two events happening together. For example, if you toss a coin twice, the joint probability of getting heads both times is 0.25, or 25%. In a contingency table, ...

What is Fisher's exact test? Fisher’s exact test is a statistical hypothesis test used to assess the association between two binary variables in a contingency table and is particularly useful when ...

The **positive predictive value (PPV)** of a diagnostic test is the probability that a person has a disease, given that they tested positive for it. This lab illustrates three common approaches for ...