Practice question · Match the pairs
Match each statistical term to its definition.
- Mean
- Median
- Standard deviation
- Variance
- Middle value when data is sorted
- Average of the squared deviations from the mean
- Sum of values divided by the number of values
- Root-mean-square deviation from the mean
Hints
- Separate measures of the centre from measures of the spread.
- One is sensitive to outliers; another deliberately is not.
Show the answer
- Mean → Sum of values divided by the number of values
- Median → Middle value when data is sorted
- Standard deviation → Root-mean-square deviation from the mean
- Variance → Average of the squared deviations from the mean
Why
These are the most common descriptive statistics in laboratory work.
Practise Statistical Analysis of Experimental Data
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