A car magazine report: ‘The average mileage in the small car market was found to be 18 kilometers per litre. The average mileage was calculated by taking cars of all manufacturers in the segment, filling them with 10 litres of fuel and driving them along the Mumbai-Pune expressway. However, for the Karuti, the mileage was 22 kilometers per litre. Clearly, if you want to buy a new car, you should buy the Karuti.’ Which of the following assumptions does the magazine make?