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Edexcel A-Level Psychology AS 1.2.7 Normal and Skewed Distribution Questions

Practise Edexcel Psychology questions identifying normal and skewed distributions, choosing mean, median or mode for the pattern of research data.

Syllabus
First assessment 2026
Course
Psychology XPS01/YPS01
Level
AS

Exam points

  • identify normal or skewed distributions from a research data pattern and describe the shape
  • choose mean, median or mode and justify the measure for skewed data in a study

Edexcel A-Level Psychology AS 1.2.7 Normal and Skewed Distribution Questions question 1

[Maximum number: 2]

A group of researchers are testing whether the number of words that can be recalled from a list is influenced by gender. One group of participants is female and the other group of participants is male. Participants have to learn and recall words from a list of 50. Each participant is given a recall score out of 50. The results of this study are shown in Table 2.

Table for Question Edexcel A-Level Psychology AS 1.2.7 Normal and Skewed Distribution Questions question 1 — Edexcel A-Level Psychology AS

Table 2

Explain why the median is an appropriate measure of central tendency for the data in this study.

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