Examlex
The errors-in-variables model analyzed in the text results in so that the OLS estimator is inconsistent.Give a condition involving the variances of X and w,under which the bias towards zero becomes small.
Oil Seep
The seepage of liquid petroleum at the surface.
Tar Pits
Natural deposits where a form of petroleum called bitumen seeps to the surface, creating pools of tar known for preserving ancient biological specimens.
Unconformity
The contact zone between unlike strata groups, marking a historical period of erosive activity or absence of sediment deposition.
Permeable Units
Layers of earth materials, such as sand or gravel, that allow water to pass through easily.
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