sigma_y

Format:

sigma_y( scan_id)

Result:

Number

Description:

Returns the standard deviations of the y values of a SCAN. It is calculated using this formula:

$$\sigma_y = \sqrt{ \frac{ \sum_{i=1}^{n} (y_i - \overline{y})^2} {n}}$$

$n$ is the current index of the SCAN.