Journal of Probability and Statistics / 2012 / Article / Fig 2

Research Article

Mixed-Effects Tobit Joint Models for Longitudinal Data with Skewness, Detection Limits, and Measurement Errors

Figure 2

The goodness-of-fit. (a–c): Residuals versus fitted values of l n (RNA) under skew-normal (SN), skew-t (ST), and normal ( 𝑁 ) models based on the JM method; the values below detection limit ( l n ( 5 0 ) ) are not included in the plots since there are no corresponding residuals but only predicted values. (d–f): Observed values versus fitted values of l n (RNA) under SN, ST, and N models, where the horizontal line at l n ( 5 0 ) represents the detection limit.

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