Lesson 4.2.3.2.2
4.2.3.2.2 Measures of central tendency and dispersion Quiz: AQA Psychology, Unit 2
20 questions
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Lesson 4.2.3.2.2, Measures of central tendency and dispersion: 20 multiple choice questions for the AQA Psychology (7182), Unit 2: Psychology in context, written with Revision Ninja.
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The 20 questions
-
How is the arithmetic mean calculated from a set of scores?
- Sum divided by count
- Middle value found
- Highest minus lowest
- Most frequent score
-
What measure of central tendency represents the middle score in ordered data?
- Mean
- Median
- Mode
- Range
-
What is the mode of a data set?
- Most frequent score
- Middle ordered score
- Arithmetic average score
- Total score spread
-
How is the range of a data set calculated?
- Middle value found
- Sum divided by count
- Sum minus median
- Highest minus lowest
-
Why is the mean strongly affected by extreme outliers?
- Uses every score
- Uses middle score
- Ignores total count
- Uses most frequent
-
When is the median preferred over the mean?
- Data contain outliers
- Sample is large
- Data are nominal
- Data are normal
-
Which level of measurement is best suited for using the mode?
- Ordinal data
- Ratio data
- Nominal data
- Interval data
-
What is the mean of the scores 2, 4, 4, 6 and 9?
- 7
- 6
- 4
- 5
-
What is the median of the scores 10, 3, 8, 15 and 7?
- 8
- 7
- 15
- 10
-
What is the mode of the scores 1, 2, 2, 3, 3, 3 and 4?
- 3
- 2
- 1
- 4
-
What is the range of the scores 12, 18, 7, 25 and 10?
- 7
- 25
- 18
- 15
-
What is the mean of the scores 3, 5, 7, 7, 8, 10 and 12, to two decimal places?
- 7.43
- 7.71
- 7.00
- 8.00
-
What is the mean of the scores 12, 15, 18 and 21?
- 17.75
- 16.5
- 18.25
- 16.25
-
A researcher has five scores with a mean of 50. Four of the scores sum to 180. What is the fifth score?
- 80
- 70
- 90
- 50
-
What is the median of the eight values 1, 3, 5, 7, 9, 11, 13 and 15?
- 7
- 10
- 9
- 8
-
Which measure of central tendency is most affected by an extreme outlier score?
- Mean
- Mode
- Range
- Median
-
What does a difference in range between two groups with identical means show?
- Equal data variance
- Different central tendencies
- Identical score distributions
- Different score spreads
-
Which central tendency measure is best when reaction times contain one extreme outlier?
- Mean
- Range
- Mode
- Median
-
Why can the range be misleading as a measure of dispersion?
- Requires nominal data
- Uses all scores
- Uses two scores
- Ignores extreme values
-
Five scores are 4, 9, 2, 9 and 6. What is the mode?
- 4
- 6
- 2
- 9
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