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Edexcel IAL Psychology 1.2.7 Normal & Skewed Distribution

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

1.2.7 - Normal and skewed distribution 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 1.2.7 - Normal and skewed distribution 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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