Pearson's Correlation Coefficient (r)

# trader_correl

(PECL trader >= 0.2.0)

trader_correl — Pearson's Correlation Coefficient (r)

### 说明

function trader_correl(array `$real0`, array `$real1`, int `$timePeriod` = ?): array

### 参数

`real0`

  浮点数数组。

`real1`

  浮点数数组。

`timePeriod`

  Number of period. Valid range from 2 to 100000.

### 返回值

Returns an array with calculated data or false on failure.

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