With reference to Figure 2, explain how the Consumer Price Index (CPI) inflation rate is measured. Refer to the concept of weights in your answer.
| Month | Inflation Rate (%) |
|---|---|
| Jan 2022 | 5.1 |
| Feb 2022 | 5.7 |
| Mar 2022 | 6.7 |
| Apr 2022 | 6.8 |
| May 2022 | 7.7 |
| Jun 2022 | 8.1 |
| Jul 2022 | 7.6 |
| Aug 2022 | 7.0 |
| Sep 2022 | 6.9 |
| Oct 2022 | 6.9 |
| Nov 2022 | 6.8 |
| Dec 2022 | 6.3 |