求問~~~在擬合混合模型中，得到的結(jié)果是輸入summary（）后，得到了

"Linear mixed-effects model fit by REML

Data: zrxs.mixed

? ?? ???AIC? ?? ? BIC? ?logLik

??-342.2206 -296.9215 182.1103

Random effects:

Formula: ~1 | group

? ?? ???(Intercept) Residual

StdDev:? ?0.4319916 0.284318

Variance function:

Structure: Different standard deviations per stratum

Formula: ~1 | group

Parameter estimates:

? ?? ???8? ?? ?? ?4? ?? ?? ?1? ?? ?? ?6? ?? ?? ?7? ?? ?? ?3? ?? ?? ?2

1.0000000 0.3877402 0.5283822 0.4166237 0.5540116 0.5470857 0.5662509

? ?? ???5

0.4745470

Fixed effects: LogD ~ LogN

? ?? ?? ?? ?? ? Value??Std.Error??DF? ?t-value p-value

(Intercept)??6.093625 0.20037051 447??30.41178? ?? ? 0

LogN? ?? ???-0.494819 0.01779109 447 -27.81274? ?? ? 0

Correlation:

? ???(Intr)

LogN -0.646

Standardized Within-Group Residuals:

? ?? ? Min? ?? ?? ?Q1? ?? ???Med? ?? ?? ?Q3? ?? ???Max

-3.4323233 -0.6251897??0.0381965??0.6996349??2.4498960

Number of Observations: 456

Number of Groups: 8

"? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

請問怎么判定模型擬合效果的好壞，怎么得出LRT？? ?