ES|QL MV_MEDIAN_ABSOLUTE_DEVIATION function
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Serverless
Generally available
Stack
Generally available
Calculates the median absolute deviation of a multi-value field.
number-
Expression that can be null, a single value, or multiple values.
Converts a multivalued field into a single valued field containing the median absolute deviation. It is calculated as the median of each data point’s deviation from the median of the entire sample. That is, for a random variable X, the median absolute deviation is median(|median(X) - X|).
If the field has an even number of values, the medians will be calculated as the average of the middle two values. If the value is not a floating point number, the averages are rounded towards 0.
| number | result |
|---|---|
| double | double |
| integer | integer |
| long | long |
| unsigned_long | unsigned_long |
ROW values = [0, 2, 5, 6]
| EVAL median_absolute_deviation = MV_MEDIAN_ABSOLUTE_DEVIATION(values), median = MV_MEDIAN(values)
| values:integer | median_absolute_deviation:integer | median:integer |
|---|---|---|
| [0, 2, 5, 6] | 2 | 3 |