Question

Please help me this is a huge grade for me!

Which table is a probability distribution table?

Answer 1

The fourth choice is a probability distribution table.

Because: (1) all numbers are between 0 and 1 and (2) they sum up to 1

Answer 2

The last table is a probability distribution.

Explanation:

This problem is solved by applying probabilities definition, which is the positive quotient between possible events and all events.

However, the important thing here is that probabilities never can be negative, they can go from 0 to 1, that's it. So, all tables that have negative numbers, means that they have negative "probabilities", which is impossible, that means that they are no probabilities.

Therefore, the right table is the last one, because it contains positive numbers, indicating possible probabilities.