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Data handling and analysis

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Question 43

A clinical trial compared the effectiveness of two different psychological interventions (Therapy X and Therapy Y) for treating anxiety over an eight-week period. The results are shown in the graph and table below.

Line graph showing the mean anxiety severity score over 8 weeks for Therapy X and Therapy Y. The y-axis shows Mean Anxiety Score from 0 to 20. The x-axis shows Weeks from 1 to 8. Therapy X is represented by a dashed line, starting at 18 in week 1, decreasing steadily to 15 in week 2, 12 in week 3, 9 in week 4, 6 in week 5, and plateauing at 4 in weeks 6, 7 and 8. Therapy Y is represented by a solid line, starting at 18 in week 1, remaining high at 17 in weeks 2 and 3, dropping slightly to 16 in week 4, then dropping sharply to 11 in week 5, 7 in week 6, and plateauing at 4 in weeks 7 and 8.

WeeksTherapy X (Mean Anxiety Score)Therapy Y (Mean Anxiety Score)
11818
21517
31217
4916
5611
647
744
844

What conclusions about the effectiveness of these two therapies can you draw from the data?

[4]

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