2021-02-02 12:00:41 +00:00
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---
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toc_priority: 220
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---
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# simpleLinearRegression {#simplelinearregression}
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2021-02-25 14:21:42 +00:00
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执行简单(一维)线性回归。
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**语法**
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``` sql
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simpleLinearRegression(x, y)
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```
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**参数**
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- `x` — x轴。
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- `y` — y轴。
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2021-02-25 14:21:42 +00:00
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**返回值**
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2021-02-25 14:21:42 +00:00
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符合`y = a*x + b`的常量 `(a, b)` 。
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2021-02-02 12:00:41 +00:00
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2021-02-25 14:21:42 +00:00
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**示例**
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``` sql
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SELECT arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [0, 1, 2, 3])
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```
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``` text
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┌─arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [0, 1, 2, 3])─┐
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│ (1,0) │
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└───────────────────────────────────────────────────────────────────┘
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```
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``` sql
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SELECT arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [3, 4, 5, 6])
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```
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``` text
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┌─arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [3, 4, 5, 6])─┐
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│ (1,3) │
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└───────────────────────────────────────────────────────────────────┘
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```
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