Lesson 1.3.3
1.3.3 Measures of central tendency and dispersion Quiz: OCR Psychology, Unit 1
20 questions
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Lesson 1.3.3, Measures of central tendency and dispersion: 20 multiple choice questions for the OCR Psychology (H567), Unit 1: Research methods (Component 01), written with Revision Ninja.
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The 20 questions
-
Which measure of central tendency is calculated by adding all scores and dividing by the total number?
- Mode
- Mean
- Range
- Median
-
Which measure of central tendency represents the middle value when data is ordered sequentially?
- Median
- Standard deviation
- Mean
- Mode
-
Which measure of central tendency is the most frequently occurring score in a dataset?
- Mode
- Median
- Mean
- Variance
-
How is the simple range of a raw data set calculated?
- Maximum minus minimum
- Sum over count
- Maximum plus minimum
- Middle minus lowest
-
Which measure of central tendency is suitable for nominal level data?
- Mean
- Mode
- Standard deviation
- Median
-
Which measure of central tendency is best suited for ordinal level data?
- Mode
- Standard deviation
- Median
- Mean
-
Which measure of central tendency requires interval or ratio level data?
- Mean
- Range
- Median
- Mode
-
What does standard deviation measure in a distribution of psychological test scores?
- Most frequent score
- Spread around mean
- Middle score value
- Difference between extremes
-
What is the mean of the scores 2, 4, 6, 8, and 10?
- 5
- 30
- 7
- 6
-
What is the median of the scores 3, 5, 7, 9, and 11?
- 35
- 6
- 7
- 5
-
What is the median of the even dataset 2, 4, 6, and 8?
- 20
- 5
- 6
- 4
-
What is the mode of the score set 4, 5, 5, 6, 7, 8, and 5?
- 4
- 8
- 5
- 6
-
What is the simple range of the scores 12, 15, 18, 25, and 30?
- 18
- 12
- 42
- 30
-
A dataset contains an extreme outlier score. Which measure of central tendency is most distorted?
- Mean
- Median
- Interquartile range
- Mode
-
A researcher records participants' favourite pet choices. Which measure of central tendency must be used?
- Mode
- Mean
- Median
- Standard deviation
-
A researcher orders reaction times from fastest to slowest. Which measure finds the middle score?
- Mode
- Mean
- Median
- Variance
-
Why is standard deviation considered superior to range as a measure of dispersion?
- Easier to calculate
- Ignores outliers
- Works for categories
- Uses all scores
-
In a positively skewed distribution, which central tendency measure typically has the highest value?
- Median
- Mode
- Mean
- Standard deviation
-
What does a standard deviation of zero indicate about a set of scores?
- Scores widely spread
- Mean equals zero
- All scores identical
- Data negatively skewed
-
What mathematical operation converts variance into standard deviation?
- Square root
- Square
- Cube root
- Half
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