Reading Data, and What It Does Not Say

Rates, percentages and misleading graphs, read off real tables.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

• data and graphs

The questions

1. The table shows one car's fuel use. How many litres per 100 km did it use in July?
2. Using the same table, how many litres of fuel did the car use in July?
3. Using the same table, in which month was the car most efficient?
4. The table shows a school's enrolment. What percentage of the students are in grade 9, to the nearest whole percent?
5. A newsletter says the school is 'mostly grade 8'. Does the table support that?
6. The bar graph shows a shop's sales. How many more sales were there in week 4 than in week 1?
7. The shop advertises 'sales have exploded — up massively since week 1'. Using the graph, what is the fairest description?
8. Which of these would make a bar graph misleading? Select all that apply.

Answer these free