Choosing the right graph

Maths

What variable(s) had to be collected for the chart below?

Students in Year 8 are taller than students in Year 7

The range of weights is greater in Year 8 than Year 7

Andy asks different students in Year 7 and Year 8 their height and weight. For which hypothesis would a scatter graph be most appropriate for?

Look at the table below, which shows the favourite lunch option for boys and girls in Year 8. First, how many boys in total were asked?

What proportion of boys prefer sandwiches?

A higher proportion of girls like soup than boys

More girls than boys like pizza, so girls prefer pizza to boys

Soup is the least popular of the 3 options