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x2sppclass
2011 Jul 26
0
using subset command in glm and glm coefficients output
...I don't understand the summary output for the coefficients:
Coefficients: (2 not defined because of singularities)
? ? ? ? ? ? ? ? ? ? ?Estimate Std. Error z value Pr(>|z|)
(Intercept) ? ? ? ? ? ?12.9786 ? 624.1941 ? 0.021 ? 0.9834
X2sppclassH ? ? ? ? ? -12.4375 ? 624.1941 ?-0.020 ? 0.9841
X2sppclassN ? ? ? ? ? -12.5512 ? 624.1940 ?-0.020 ? 0.9840
placeEast ? ? ? ? ? ? ? 1.3304 ? ? 0.5870 ? 2.266 ? 0.0234 *
placeWest ? ? ? ? ? ? ? 1.5875 ? ? 0.5468 ? 2.903 ? 0.0037 **
X2sppclassH:placeEast ? 0.9532 ? ? 0.7325 ? 1.301 ? 0.1931
X2sppclassN:placeEast ? ? ? NA ? ? ? ? NA ? ? ?NA ? ? ? NA
X2sppclassH...