Question 20N.3.HL.TZ0.2a.ii
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.HL.TZ0.2a.ii |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Calculate | Question number | a.ii | Adapted from | N/A |
Table 1 provides information required for the calculation of a consumer price index (CPI). It shows a typical basket of goods purchased by the citizens of Country Alpha and the prices of these goods for two consecutive years. Assume 2015 is the base year, when the cost of the typical basket was $45.00.
The cost of the typical basket was $50 in 2017. Calculate the consumer price index (CPI) for 2017.
[1]
50/45 × 100 = 111.11 No units (eg $) permitted.
NB workings are not required.
Several errors were in evidence here. Candidates assumed that 2016 was the base year (even though 2015 is stated clearly as the base year) and calculated accordingly. Rounding errors were common, with candidates neglecting the requirement to express answers accurately or to 2dp.
