<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">Você precisa fazer uma regressão.</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">Segue um modelo</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"># Regression analyses, standardized</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">model1.z <- lm(scale(PE$endurance) ~ scale(PE$age))</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">summary(model1.z)</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">confint(model1.z)</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153); min-height: 15px;"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">model2.z <- lm(scale(PE$endurance) ~ scale(PE$activeyears))</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">summary(model2.z)</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">confint(model2.z)</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153); min-height: 15px;"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">model3.z <- lm(scale(PE$endurance) ~ scale(PE$age) + scale(PE$activeyears))</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">summary(model3.z)</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">confint(model3.z)</div><div><br></div><div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"># Conduct a model comparison NHST to compare the fit of model2.z to the fit of model3.z</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">anova(model2.z, model3.z)</div></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">Acho que seria assim</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);">Daniel</div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div style="margin: 0px 0px 0px 4px; text-indent: -4px; font-size: 11.1px; font-family: Monaco; color: rgb(6, 26, 153);"><br></div><div><br></div><div><br></div><div apple-content-edited="true">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="font-size: 12px; ">Daniel Tiezzi, MD, PhD</div><div style="font-size: 12px; ">Professor Associado</div><div style="font-size: 12px; ">Departamento de Ginecologia e Obstetrícia</div><div style="font-size: 12px; ">Setor de Mastologia e Oncologia Ginecológica</div><div style="font-size: 12px; ">Faculdade de Medicina de Ribeirão Preto - USP</div><div style="font-size: 12px; ">Tel.: 16 3602-2488</div><div style="font-size: 12px; ">e-mail: <a href="mailto:dtiezzi@fmrp.usp.br">dtiezzi@fmrp.usp.br</a></div></div><div><br></div><div><br></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br><div><div>On Sep 18, 2014, at 12:47 PM, Jefferson Ferreira-Ferreira <<a href="mailto:jecogeo@gmail.com">jecogeo@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><br clear="all"><div>Prezados;</div><div><br></div><div>Uma dúvida básica de um iniciante em análises estatísticas.</div><div>Tenho uma série de variáveis categóricas binárias e duas variáveis contínuas. Eu gostaria de saber o quando minhas variáveis categóricas explicam minhas duas variáveis contínuas. Por exemplo:</div><div><br></div><div><div>c1<span class="" style="white-space:pre"> </span>c2<span class="" style="white-space:pre"> </span>c3<span class="" style="white-space:pre"> </span>c4<span class="" style="white-space:pre"> </span>x<span class="" style="white-space:pre"> </span>y</div><div>0<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>931<span class="" style="white-space:pre"> </span>623</div><div>0<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>163<span class="" style="white-space:pre"> </span>259</div><div>1<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>690<span class="" style="white-space:pre"> </span>306</div><div>1<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>1<span class="" style="white-space:pre"> </span>0<span class="" style="white-space:pre"> </span>690<span class="" style="white-space:pre"> </span>306</div></div><div><br></div><div><br></div><div>A pergunta é: o quanto a combinação das variáveis c explicam os valores de x e y? Ou, qual a correlação entre as variáveis c e as variáveis x e y?</div><div><br></div><div>Podem me dar alguma ideia de análises possíveis?</div><div>Obrigado.</div><div><br></div><div><br></div>-- <br><div dir="ltr"><div style="text-align:left"><div style="margin-bottom: 0.0001pt; line-height: normal;"><br class="webkit-block-placeholder"></div><div style="margin: 0px; font-family: Tahoma, Helvetica, sans-serif; font-size: 13px; text-align: -webkit-auto;"><b><i><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Jefferson Ferreira-Ferreira</span></i></b></div><div style="margin: 0px; font-family: Tahoma, Helvetica, sans-serif; font-size: 13px; text-align: -webkit-auto;"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:gray">Geógrafo – GEOPROCESSAMENTO IDSM | Coordenadoria de TI</span></div><div style="margin: 0px; font-family: Tahoma, Helvetica, sans-serif; font-size: 13px; text-align: -webkit-auto;"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:gray"><img src="http://img29.imageshack.us/img29/9313/emailass.png"><br></span></div><p style="margin:0px;font-family:Tahoma,Helvetica,sans-serif;font-size:13px;text-align:-webkit-auto"></p><div style="margin: 0px; font-family: Tahoma, Helvetica, sans-serif; font-size: 13px; text-align: -webkit-auto;"><span style="font-family:Calibri,sans-serif;font-size:11pt"><a href="mailto:Jefferson.ferreira@mamiraua.org.br" target="_blank">Jefferson.ferreira@mamiraua.org.br</a></span></div><div style="margin: 0px; font-family: Tahoma, Helvetica, sans-serif; font-size: 13px; text-align: -webkit-auto;"><b><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(3,69,20)">Instituto de Desenvolvimento Sustentável Mamirauá</span></b></div><p style="margin:0px;font-family:Tahoma,Helvetica,sans-serif;font-size:13px;text-align:-webkit-auto"></p><div style="margin: 0px;"><font>Ministério da Ciência, Tecnologia e Inovação</font></div><div style="margin: 0px;"><font>Telefone: +55 97 3343-9710</font></div><p style="margin:0px"></p><div style="margin: 0px; color: rgb(34, 34, 34); font-family: tahoma, helvetica, sans-serif; background-color: rgb(255, 255, 255);"><span style="font-family:arial,sans-serif;font-size:9pt"></span><b style="font-family:arial,sans-serif"><span style="font-size:9pt;font-family:Arial,sans-serif"><img src="http://img543.imageshack.us/img543/7638/emailgoogle.png">Google Maps</span></b><span style="font-size:9pt;font-family:Arial,sans-serif"> - Mapas deste e-mail</span><span style="font-family:arial,sans-serif;font-size:9pt">:</span></div><p style="margin:0px;color:rgb(34,34,34);font-family:tahoma,helvetica,sans-serif;background-color:rgb(255,255,255)"></p><div style="margin: 0px; color: rgb(34, 34, 34); font-family: arial, sans-serif; background-color: rgb(255, 255, 255);"><a href="https://maps.google.com.br/maps?q=-3.355557,-64.731151&ll=-3.355471,-64.731145&spn=0.004632,0.006968&num=1&t=h&z=18" style="color:rgb(17,85,204)" target="_blank"><span style="font-size:9pt;font-family:'Times New Roman',serif"><span style="color:blue"><img src="http://img853.imageshack.us/img853/5025/emailtag.png">Exibir <span style="color:rgb(34,34,34);background-color:rgb(255,255,204)">mapa</span> ampliado</span></span></a></div><div><br class="webkit-block-placeholder"></div><div><br class="webkit-block-placeholder"></div><i><br>Contatos particulares:</i></div><div style="text-align:left"><i>(55) 9615-0100</i><br></div></div>
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