In this exam-style question, a pictogram is displayed showing the number of hours 30 school pupils spent using a computer in a day. Find the range, median, and total number of hours spent by the class. Practise this question again with a new set of numbers by pressing the 'New data' button.

This item teaches:

• about the range
• about the use of keys to represent scales
• about the interpretation of information displayed in a graph
• about the median
• about pictograms