Sentence examples for unobserved variables from inspiring English sources

Factor analysis is a statistical method used to describe variability among observed variables in terms of fewer unobserved variables called factors [ 22].

The selection is influenced by both observed and unobserved variables.

To properly account for spatial dependence and unobserved variables biases, we apply augmented spatial econometric models.

u i and η i denote time-invariant unobserved variables, while ε it and v it denote time-variant unobserved variables.

This indicates the existence of a perceived difference in the variance of unobserved variables across groups.

The effect of intermarriage obviously disappears when I control for unobserved variables.

Figure 2 Preferences and group differences in the means of unobserved variables.

u i and ε it denotes time-invariant and time-variant unobserved variables, respectively.

A formal sensitivity analysis finds our results are quite robust to lingering selection on unobserved variables.

As a result, it is possible that unobserved variables confound the associations identified in this study.

Another possibility could be that unobserved variables are correlated with the lagged dependent variables.