We would like to explain how we use the two-way table to determine the probability.

We determine the probability of any event according to rules and when we need to substitute the value of any category, we should use the exact value of a sample which over by the total number of outcomes or the total number of samples.

We determine the probability of any event according to rules and when we need to substitute the value of any category, we should use the exact value of a sample which over by the total number of outcomes or the total number of samples.