In a class of 28 children, 19 attend drama classes, 13 attend singing lessons, and six attend both drama classes and singing lessons. One child is chosen at random from the class.

Event D is ‘a child who attends drama classes is chosen’.

Event S is ‘a child who attends singing lessons is chosen’.

a. Illustrate the data in an appropriate table or diagram.

b. Are events D and S independent? Give a reason for your answer.