TERM 1
Simultaneous causality
bias
DEFINITION 1
When, in addition to the causal link of interest from X to Y,
there is a causal link from Y to X. Simultaneous causality
makes X correlated with the error term in the population
regression of interest.
TERM 2
External
validity
DEFINITION 2
Inferences and conclusions from a statistical study are
externally valid if they can be generalized from the
population and the setting studied to other populations and
settings.
TERM 3
Functional form misspecification
DEFINITION 3
When the form of the estimated regression function does not
match the form of the population regression function; for
example, when a linear specification is used but the true
population regression function is quadratic.
TERM 4
Sample selection bias
DEFINITION 4
The bias in an estimator of a regressio n coefficient that arises
when a selection process influences the availability of data and
that process is related to the depend ent variable.This induces
correlation between one or more re gressors and the regression
error.(From web)In statistics, sampling bias is a bias in which a
sample is collected in such a way tha t some members of the
intended population are less likely to b e included than others.
TERM 5
Simultaneous equations bias aka
simultaneous causality bias.
DEFINITION 5
Simultaneous causality bias: When, in addition to the causal
link of interest from X to Y, there is a causal link from Y to X.
Simultaneous causality makes X correlated with the error
term in the population regression of interest.
