Description

Syntax

double regr_sxx(y, x)

x, y 支持基本数字类型

计算所有输入数据点与其线性回归拟合直线之间的横向离差平方和

EXAMPLE

我们有如下数据

mysql> select * from t;
+------+------+------+
| id   | x    | y    |
+------+------+------+
|    2 |   14 |   27 |
|    4 |   10 |   20 |
|    3 |    5 |    7 |
|    1 |   18 |   13 |
+------+------+------+

mysql> select regr_sxx(y,x) from t;
+----------------+
| regr_sxx(y, x) |
+----------------+
|          92.75 |
+----------------+

KEYWORDS

REGR_SXX