v3.2.0+
| Status: | effective |
| Progress: | 100% |
| Version: | 3.2.0+ |
Help:Statistics
From semantic-mediawiki.org
Several result formats exist to deliver descriptive statistics from ask queries.
| Min | minimum value (smallest observation) |
| Lower Quartile | first quartile (Q1 = 25th percentile) |
| Median | middle value (Q2 = 50th percentile, separating the greater and lesser halves of a data set) |
| Upper Quartile | second quartile (Q3 = 75th percentile) |
| Max | maximum value (largest observation) |
| Average | arithmetic mean (Sum of values of a data set divided by number of values) |
| Mode | mode (most frequent value in a data set) |
| Variance | variance (squared deviation from the mean) |
| Standard deviation | standard deviation (square root of the variance) |
| Interquartile range | interquartile range (difference between upper and lower quartiles) |
| Interquartile mean | interquartile mean (truncated mean of the interquartile range) |
| Sum | sum of values |
There can be differences in calculation whether or not the query returns all values (total population) or just a set of values (sample), e. g. Samplevariance and Samplestandarddeviation.
