stddevSampStable

stddevSampStable(x)

DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
(
    population UInt8,
)
ENGINE = Log;

INSERT INTO test_data VALUES (3),(3),(3),(4),(4),(5),(5),(7),(11),(15);

SELECT
    stddevSampStable(population)
FROM test_data;

┌─stddevSampStable(population)─┐
│                            4 │
└──────────────────────────────┘