For a data set, different summaries matter:
- mean — the “average level”;
- range — spread of the data (maximum minus minimum);
- mode — the most frequent value;
- median — the middle of an ordered list.
Different measures answer different questions about the data
Always order the data before finding the median
The mode may equal the median, but it does not have to
Compute the summary statistics for the data set.
2,4,4,5,7
xˉ=4.4
R=5
Mode: 4
Median: 4
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