pub const DEFAULT_SIGMA: f64 = 4.0;Expand description
Default sigma (standard deviation threshold) for statistical significance.
Measurements are considered significantly different if their z-score exceeds this threshold. A value of 4.0 means that the measurement must be more than 4 standard deviations (or MAD units) away from the mean to be flagged as a regression.
This value is used when neither CLI options nor configuration file
specify sigma.