开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

aileen20180623 · 2022年12月07日

您好,这题的解题思路是什么?

* 问题详情,请 查看题干

NO.PZ202208220100000506

问题如下:

Identify which one of the following statements about the logistic regression model fit is most likely to be correct. “Based on the log-likelihood criteria, ____.”

选项:

A.Model 2 has a better fit because it has a higher log-likelihood value B.Model 2 has a better fit because it has a lower log-likelihood value C.Model 1 has a better fit because it has a higher log-likelihood value

解释:

A is correct. Model 2 has a better fit because it has a higher (less negative) log-likelihood value, –450.40 versus –451.66, compared to Model 1.

您好,请问这个为什么单看loglikelihood就行,我想成了mls和假设检验的方法,没想到答案就是对负数的大小进行了对比。有什么点是我没想到的吗?

1 个答案

星星_品职助教 · 2022年12月08日

同学你好,

goodness of fit的判断标准( log-likelihood criteria)为直接对比负数,log-likelihood越大,方程拟合的越好。

由于Model 2的log-likelihood value更大,所以fitness更好。