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<p>本人用eviews做logit模型分析,结果如下,只出来系数,其他如标准差、统计量、P值都为NA,不知是什么原因,请大侠指点!!!</p><p></p><p>Dependent Variable: DEPENDENT&nbsp;&nbsp;&nbsp;&nbsp;<br/>Method: ML - Binary Logit (Quadratic hill climbing)&nbsp;&nbsp;&nbsp;&nbsp;<br/>Date: 03/29/09&nbsp;&nbsp; Time: 22:15&nbsp;&nbsp;&nbsp;&nbsp;<br/>Sample: 1 131&nbsp;&nbsp;&nbsp;&nbsp;<br/>Included observations: 131&nbsp;&nbsp;&nbsp;&nbsp;<br/>Convergence achieved after 39 iterations&nbsp;&nbsp;&nbsp;&nbsp;<br/>WARNING: Singular covariance - coefficients are not unique&nbsp;&nbsp;&nbsp;&nbsp;<br/>Covariance matrix computed using second derivatives&nbsp;&nbsp;&nbsp;&nbsp;<br/>&nbsp;&nbsp;&nbsp;&nbsp;<br/>Variable&nbsp;Coefficient&nbsp;Std. Error&nbsp;z-Statistic&nbsp;Prob.&nbsp; <br/>&nbsp;&nbsp;&nbsp;&nbsp;<br/>C&nbsp;1637.127&nbsp;NA&nbsp;NA&nbsp;NA<br/>EXPERIENCE1&nbsp;-24.96572&nbsp;NA&nbsp;NA&nbsp;NA<br/>EXPERIENCE2&nbsp;0.113727&nbsp;NA&nbsp;NA&nbsp;NA<br/>HCI&nbsp;0.630150&nbsp;NA&nbsp;NA&nbsp;NA<br/>IT&nbsp;3.449813&nbsp;NA&nbsp;NA&nbsp;NA<br/>GDP&nbsp;-0.068768&nbsp;NA&nbsp;NA&nbsp;NA<br/>PGDP&nbsp;-0.051291&nbsp;NA&nbsp;NA&nbsp;NA<br/>POP&nbsp;-0.104628&nbsp;NA&nbsp;NA&nbsp;NA<br/>RATIOFDI&nbsp;42.75348&nbsp;NA&nbsp;NA&nbsp;NA<br/>YEAR&nbsp;-0.805496&nbsp;NA&nbsp;NA&nbsp;NA<br/>RESOURCE&nbsp;1.267700&nbsp;NA&nbsp;NA&nbsp;NA<br/>&nbsp;&nbsp;&nbsp;&nbsp;<br/>Mean dependent var&nbsp;0.824427&nbsp;&nbsp;&nbsp;&nbsp; S.D. dependent var&nbsp;&nbsp;0.381917<br/>S.E. of regression&nbsp;0.336748&nbsp;&nbsp;&nbsp;&nbsp; Akaike info criterion&nbsp;&nbsp;0.878288<br/>Sum squared resid&nbsp;13.60787&nbsp;&nbsp;&nbsp;&nbsp; Schwarz criterion&nbsp;&nbsp;1.119717<br/>Log likelihood&nbsp;-46.52786&nbsp;&nbsp;&nbsp;&nbsp; Hannan-Quinn criter.&nbsp;&nbsp;0.976391<br/>Restr. log likelihood&nbsp;-60.86431&nbsp;&nbsp;&nbsp;&nbsp; Avg. log likelihood&nbsp;&nbsp;-0.355174<br/>LR statistic (10 df)&nbsp;28.67291&nbsp;&nbsp;&nbsp;&nbsp; McFadden R-squared&nbsp;&nbsp;0.235548<br/>Probability(LR stat)&nbsp;0.001407&nbsp;&nbsp;&nbsp;<br/>&nbsp;&nbsp;&nbsp;&nbsp;<br/>Obs with Dep=0&nbsp;23&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total obs&nbsp;&nbsp;131<br/>Obs with Dep=1&nbsp;108&nbsp;&nbsp;&nbsp;<br/>&nbsp;&nbsp;&nbsp;&nbsp;<br/></p>
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