Assertion: regression's variable | /r/HasProperty | observed
Facets:
value: only sometimes
type: DEGREE
Source sentences:
text: Censored regression models may be used when the dependent variable is only sometimes observed, and Heckman correction type models may be used when the sample is not randomly selected from the population of interest.
text: {\displaystyle G=(N,E)} , where N {\displaystyle N} (nodes) is the set of variables (observed values) involved, and E {\displaystyle E} (edges) is the set of pairs ( i , j ) {
text: Censored regression models may be used when the dependent variable is only sometimes observed, and Heckman correction type models may be used when the sample is not randomly selected from the population of interest.