O-LevelComputer ScienceAlgorithm design and problem-solving2210/22 · May/June 2022 · Q49 Marks
This algorithm checks the temperature of hot food being served to customers. [Figure 4.1]
- (a)Complete the trace table for the algorithm using this input data: 75, 78, 84, 87, 91, 80, 75, 70, 65, 62, −1, 20[7]
- (b)State how the final output from the algorithm could be improved.[1]
- (c)Identify the process in the algorithm that is not required.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.
- [1] One mark for each correct column
- [1] include a message to explain the value output / e. g. "The percentage of meals not served” // outputting Hot, Cold and Serve
- [1] updating the Serve variable // Serve ← Serve + 1
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