Statistical charts and diagrams — practice question

Zachary asks the 30 students in his class to name their favourite sport. The results are shown in the table. Netball: 7, Football: 12, Hockey: 6, Tennis: 5. A pictogram is displayed with rows labelled Netball, Football, Hockey and Tennis. In the Netball row, there is one full circle split into four equal sections and one circle that is half shaded. Key: one full circle stands for 4 people.