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style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><FONT color=#0000ff
size=3>Experimente estas opções, o na. tem vários comandos, e nem sempre um
funciona para os outros:</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><FONT color=#0000ff
size=3>cor(d$Idade..anos.,d$Conc..M.ml,use='na.or.complete')</FONT></SPAN></P>
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color=#0000ff size=3>dens=density(d$leuc.M.ml.,n=200,na.rm=T)</FONT></SPAN></P>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN>Olá Walmes,</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN></SPAN><SPAN>eu usei no
stepAIC(modelo,na.action=na.exclude) isso ja deveria bastar né? Mas mesmo assim
o erro no stepAIC continua.</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN></SPAN>Daniela Rodrigues
Recchia</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt">Master Student of Statistics -
Technische Universität Dortmund.</P></DIV></BODY></HTML>