Geluk, I.

answer model nonresponse question variable individual value category parameter questionnaire regression model item nonresponse nonrespondent regression sample example ordinal method response activity xi | xi modeling 1 | xi section investment portfolio paper out-of-sample forecasting performance q questions interest out-of-sample change estimate parameter estimates answer category product application threshold analysis philip modeling item nonresponse franse ordinal regression model forecasting estimation estimation sample nonresponse category 2 | xi thresholds 1 table i attitude effect log-likelihood number classification respondent research measure performance answer categories sample question section 4. error characteristic out-of-sample classification 8329 individuals company option table logit model survey questionnaire data probit model log-likelihood values likelihood answer 1 matrix specification strategy investment company answer 3