<div dir="ltr"><br clear="all"><div><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;text-align:center"><span style="font-family:arial,helvetica,sans-serif"><strong>Seminário do Programa de Pós-Graduação em Estatística da UFPE</strong></span></p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"><span style="font-family:arial,helvetica,sans-serif">"<span style="color:rgb(34,34,34);font-family:arial,sans-serif"><strong><span>Modelagem e análise de dados incompletos</span></strong></span>"</span></p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"> </p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"> </p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"><span style="font-family:arial,helvetica,sans-serif">Dra. Anna Sikov</span></p><div style="font-family:arial,sans-serif;text-align:center"><span style="font-family:arial,helvetica,sans-serif"> </span></div><div style="font-family:arial,sans-serif;text-align:center"><span style="font-family:arial,helvetica,sans-serif">IME - USP</span></div><div style="font-family:arial,sans-serif;text-align:center"> </div><div style="font-family:arial,sans-serif;text-align:center"> </div><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"><span style="font-family:arial,helvetica,sans-serif"><span style="color:rgb(26,26,26)">Data: 25 de novembro de 2014 (quarta-feira)</span></span></p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"> </p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"> </p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;margin:0cm 0cm 0pt;text-align:center"> </p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"><span style="color:rgb(26,26,26);font-family:arial,helvetica,sans-serif">Horário: 16:00 horas</span></p><p style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"><span style="color:rgb(26,26,26);font-family:arial,helvetica,sans-serif">Local: Auditório Ruy Gomes - Departamento de Estatística da UFPE, <br></span><span style="color:rgb(26,26,26);font-family:arial,helvetica,sans-serif">Segundo andar do CCEN</span></p><div style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"> </div><div style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"> </div><div style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"><span style="color:rgb(26,26,26);font-family:arial,helvetica,sans-serif">Resumo</span></div><div style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif"> </div><div style="color:rgb(0,0,0);font-family:Verdana,Arial,Helvetica,sans-serif;text-align:justify"><p style="margin-top:0pt;margin-bottom:0pt;direction:ltr;vertical-align:baseline"><span style="color:rgb(34,34,34);font-family:arial,sans-serif">In this research we develop and apply new techniques for handling </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">nonignorable nonresponse. Most of the methods dealing with this </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">problem assume that the missingness (nonresponse) is only for the </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">target outcome variable, whereas the auxiliary (explanatory) variables </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">are observed for both the respondents and the nonrespondents. This, </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">however, is not always true and we consider also the case of ‘unit </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">nonresponse’, where the auxiliary information for the nonrespondents </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">is likewise unobserved, except, perhaps, for the population means of </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">some or all of the auxiliary variables. These means are often </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">available from administrative and census records. In order to evaluate </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">our approach and compare it to other approaches studied in the </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">literature, we analyze income data collected as part of the Household </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">Expenditure Survey carried out by the Israel Central Bureau of </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">Statistics in 2005. The initial response rate in this survey was as </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">low as 43%. After several recalls, the response rate went up to 90%. </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">This survey provides us therefore the unique opportunity of comparing </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">the imputed values after the first interview with the actual true </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif">values obtained.</span></p></div></div>-- <br><div class="gmail_signature"><div dir="ltr">Francisco José A. Cysneiros<div>Associate professor </div><div><span style="background-color:rgb(238,238,238);font-family:'Lucida Grande','Lucida Sans Unicode','Lucida Sans',Geneva,Arial,Helvetica,Tahoma,sans-serif;font-size:13px">Head of the Graduate Program in Statistics</span></div><div><span style="background-color:rgb(238,238,238);font-family:'Lucida Grande','Lucida Sans Unicode','Lucida Sans',Geneva,Arial,Helvetica,Tahoma,sans-serif;font-size:13px">Departament of Statistics - </span><span style="background-color:rgb(238,238,238);font-family:'Lucida Grande','Lucida Sans Unicode','Lucida Sans',Geneva,Arial,Helvetica,Tahoma,sans-serif">UFPE</span></div><div><font face="Lucida Grande, Lucida Sans Unicode, Lucida Sans, Geneva, Arial, Helvetica, Tahoma, sans-serif"><a href="http://www.de.ufpe.br/~cysneiros" target="_blank">www.de.ufpe.br/~cysneiros</a></font></div><div><b style="color:rgb(0,0,0);font-family:'Times New Roman',serif;font-size:medium;text-align:center"><span lang="EN-US"><a href="http://lattes.cnpq.br/1313497098151734" style="color:purple" target="_blank">http:/lattes.cnpq.br/1313497098151734</a></span></b></div><div><b style="color:rgb(0,0,0);font-family:'Times New Roman',serif;font-size:medium;text-align:center"><span lang="EN-US"><a href="http://www.researcherid.com/rid/G-6333-2012" style="color:purple" target="_blank"><span style="color:purple"><span><span lang="PT-BR">ResearchedId</span></span></span><span lang="PT-BR" style="color:purple"> G-633-2012</span></a></span></b></div><div><b style="color:rgb(0,0,0);font-family:'Times New Roman',serif;font-size:medium;text-align:center"><span lang="EN-US"><a href="http://orcid.org/0000-0001-6757-6969" style="color:purple" target="_blank"><span lang="PT-BR">ORCID</span></a></span></b></div></div></div>
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