Lesson 3.1.4.9.4

3.1.4.9.4 Descriptive statistics: mean, median, mode and range Quiz: AQA Psychology, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.1.4.9.4, Descriptive statistics: mean, median, mode and range: 20 multiple choice questions for the AQA GCSE Psychology (8182), Unit 4: Research methods, written with Revision Ninja.

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The 20 questions

  1. Which measure of central tendency is the most common value in a data set?

    • Median
    • Mean
    • Range
    • Mode

  2. What is the range of the scores 4, 9, 12 and 7?

    • 9
    • 12
    • 4
    • 8

  3. What is the median of 3, 8, 5, 9 and 1?

    • 5
    • 3
    • 9
    • 8

  4. What is the mean of 2, 4, 6 and 8?

    • 20
    • 5
    • 4
    • 6

  5. Which is the best measure of average when a data set contains one extreme outlier?

    • Total
    • Mean
    • Range
    • Median

  6. What is the mode of 2, 3, 3, 5, 7, 3 and 5?

    • 4
    • 5
    • 3
    • 7

  7. What does the range tell you about a data set?

    • The middle score once the data are ordered
    • The most frequently occurring score in the data
    • How spread out the scores are, from lowest to highest
    • The average score across all participants

  8. Which measure is calculated by adding all values and dividing by the number of values?

    • Mode
    • Mean
    • Range
    • Median

  9. Ten scores are 2, 3, 3, 4, 5, 6, 6, 6, 9 and 10. What is the mode?

    • 6
    • 10
    • 3
    • 5

  10. Four values are 7, 1, 9 and 3. What is the median?

    • 3
    • 4
    • 5
    • 7

  11. Scores are 15, 20, 25, 30 and 90. Which measure best describes the typical score?

    • Mode, because the set contains no repeated values
    • Range, because it shows the typical score
    • Mean, because the outlier does not affect it at all
    • Median, because the outlier 90 pulls the mean upwards

  12. Five scores have a mean of 12, and four of them sum to 40. What is the fifth score?

    • 20
    • 28
    • 12
    • 10

  13. Scores are 14, 9, 22, 17 and 9. What is the range?

    • 13
    • 14
    • 9
    • 22

  14. A researcher wants the most common answer to a closed question with categories. Which measure should be used?

    • Mean
    • Median
    • Mode
    • Range

  15. Two groups have the same mean but very different ranges. What does this suggest?

    • The two groups must have identical scores because the means are the same
    • The group with the bigger range has the higher average score across the study
    • The range has no meaning when the means are equal across the two conditions
    • One group's scores are more spread out around the same average than the other's

  16. Why might a researcher report both the mean and the range?

    • Both measures show the most common score in the sample across all conditions
    • The mean gives the spread and the range shows the typical score of the group
    • Both measures are needed only for qualitative data collected from interviews
    • The mean gives a typical value and the range shows how spread out the scores are

  17. Which statement about the median of an odd-numbered list is true?

    • It is the middle value after the scores are put in order
    • It is always the largest value in the list
    • It is the average of the first and last values only
    • It is the value that appears most often

  18. A set of scores has a mean of 50 and a median of 45. What does this suggest?

    • The distribution is likely skewed by high scores pulling the mean upwards
    • The median has been calculated incorrectly and must be recalculated
    • The distribution is perfectly symmetrical around 50
    • The data set must contain no outliers at all

  19. What is the mean of 12, 15, 18 and 21?

    • 15
    • 18
    • 17
    • 16.5

  20. Which measure of central tendency uses all of the values in the data set?

    • Mode
    • Frequency
    • Median
    • Mean

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