14 lines
402 B
SQL
14 lines
402 B
SQL
-- continuous uniform distribution has kurtosis = -6/5, skewness = 0.0
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-- http://mathworld.wolfram.com/UniformDistribution.html
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set client_min_messages to ERROR;
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WITH dist AS (
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SELECT generate_series(0,10000)::numeric / 10000.0 i
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)
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SELECT
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abs(CDB_Kurtosis(array_agg(i)) + 1.2) < 1e-3 AS kurtosis,
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abs(CDB_Skewness(array_agg(i))) < 1e-3 AS skewness
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FROM dist;
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set client_min_messages to NOTICE;
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