The table below shows the average price index of fair-trade coffee beans between 2016 and 2020.
| Year | Price index |
|---|---|
| 2016 | 100 |
| 2017 | 120 |
| 2018 | 150 |
| 2019 | 135 |
| 2020 | 160 |
Which one of the following can be deduced from the above data?
The average price of fair-trade coffee beans rose in every year of the period 2016 to 2020.
Compared with 2018, the average price of fair-trade coffee beans was 10% cheaper in 2019.
Total revenue from the sale of fair-trade coffee beans fell in 2019.
Between 2017 and 2018, the average price of fair-trade coffee beans rose by 30%.
187 exam-style questions on AQA A Level Economics 2.1 The measurement of macroeconomic performance, covering 2.1.1 The objectives of government economic policy, 2.1.2 Macroeconomic indicators, 2.1.3 Uses of index numbers, and 2.1.4 Uses of national income data (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.