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Data handling and analysis

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Question 83

An environmental logistics firm investigated the efficiency of two different routing algorithms for its fleet of electric delivery vans. The firm measured the energy consumption (in Wh/km) over 50 test journeys for each algorithm:

  • Algorithm X: Dynamic Eco-routing (prioritising terrain flatness and constant speeds).
  • Algorithm Y: Shortest-path routing (prioritising absolute distance minimisation).

The results are summarised in Table 1 below.

Table 1: Mean energy consumption and standard deviations for the two routing algorithms

Algorithm X (Dynamic Eco-routing)Algorithm Y (Shortest-path routing)
Mean energy consumption (Wh/km)165.4198.2
Standard deviation (Wh/km)12.842.5

What conclusions might the logistics manager draw from the data in Table 1? Refer to both the means and the standard deviations in your answer.

[6]

Data handling and analysis Questions

  1. A Level
  2. /Psychology
  3. /Data handling and analysis

Practise AQA A Level Psychology Data handling and analysis with exam-style questions for A Level Psychology. 263 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank