For each one of the following figures, identify if it is a valid CDF. The value of the CDF at points of discontinuity is indicated with a small solid circle.

(original images belonging to: "The science of uncertainty")

1. No, it is not a valid CDF

2. Yes, it is not a valid CDF

3.No, it is not a valid CDF

4.No, it is not a valid CDF

1 answer

No,No,Yes,No