Mr Barr teaches students in both Year 7 and Year 8. He records the number of pets that students in each year have and uses a bar chart to represent this information.
a)
Write down the mode for the number of pets for the Year 7 students.
The mode for Year 7 is one pet as that has the highest (shaded) bar
b)
How many Year 8 students are there altogether?
Add up the heights (frequencies) of the year 8 (striped) bars.
4 + 8 + 4 + 3 + 0 + 2 = 21
21