Figure 5From: Detecting contaminated birthdates using generalized additive modelsOutliers returned by the seasonal ARIMA model. Assuming normality of the residuals, birthdates with residuals above the 99.99th percentile are identified as outliers. The estimated outliers are in red crosses. In total 69 outliers are identified, resulting in 22 false positives and 11 false negatives.Back to article page