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31. Effects of college choice on income : estimation and sensitivity analysis
Sammanfattning : .... LÄS MER
32. Sensitivity Analysis of Untestable Assumptions in Causal Inference
Sammanfattning : This thesis contributes to the research field of causal inference, where the effect of a treatment on an outcome is of interest is concerned. Many such effects cannot be estimated through randomised experiments. For example, the effect of higher education on future income needs to be estimated using observational data. LÄS MER
33. Essays on univariate long memory models
Sammanfattning : This thesis consists of five papers dealing with univariate long memory modelsin time series analysis.The first paper examines the performance of information criteria when usedto determine the lag order of a long memory process. The results indicate thatinformation criteria cannot be used successfully for small sample sizes. LÄS MER
34. Interval censored time of status change in survival analysis
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35. Pre-testing and specification search in an autoregressive moving average process with extension to unit root cases
Sammanfattning : Several methods are applied in well defined contexts in the search for an appropriatestatistical model to fit a data set. Preliminary tests of significance for this end aretermed pre-testing. The aim of this study was to investigate some of the consequencesof such pre-testing in a few specific time series processes. LÄS MER
