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1.2 KiB
1.2 KiB
slug | sidebar_position |
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/en/sql-reference/aggregate-functions/reference/analysis_of_variance | 6 |
analysisOfVariance
Provides a statistical test for one-way analysis of variance (ANOVA test). It is a test over several groups of normally distributed observations to find out whether all groups have the same mean or not.
Syntax
analysisOfVariance(val, group_no)
Aliases: anova
Parameters
val
: value.group_no
: group number thatval
belongs to.
:::note Groups are enumerated starting from 0 and there should be at least two groups to perform a test. There should be at least one group with the number of observations greater than one. :::
Returned value
Example
Query:
SELECT analysisOfVariance(number, number % 2) FROM numbers(1048575);
Result:
┌─analysisOfVariance(number, modulo(number, 2))─┐
│ (0,1) │
└───────────────────────────────────────────────┘