# Re: st: ask help for -fitstat- after regresion

 From Richard Williams To statalist@hsphsun2.harvard.edu, "statalist@hsphsun2.harvard.edu" Subject Re: st: ask help for -fitstat- after regresion Date Sun, 21 Mar 2004 02:17:25 -0500

```At 01:00 PM 3/21/2004 +0800, rghuang wrote:
```
```my question is as follows:
```
Long & Freese go over this in their book if you happen to have access to it. Very quickly,

```1.what dose D(66) means?and what it tells us?
```
D = Deviance = -2 * Log-Lik Full Model. The 66 is the DF - # of parameters (Looks like you have 69 cases and 2 IVs.)

2.as we knows,aic and bic tell us how to choose the best model.the model with small aic and bic is the better one.but what is the use of aic*n?and what is bic'?how to caculate it?and what does it tell us ?
AIC*n is, literally, AIC * N. In your case, 18.575 * 69 = 1281.675 (the slight difference is rounding error). Long and Freese say some people report this instead of AIC.

BIC' is an alternative version of BIC. The more negative, the better.

```thank you!

.fitstat

Measures of Fit for regress of price

Log-Lik Intercept Only:     -647.799     Log-Lik Full Model:         -637.829
D(66):                      1275.659     LR(2):                        19.939
Prob > LR:                     0.000
AIC:                          18.575     AIC*n:                      1281.659
BIC:                         996.208     BIC':                        -11.470

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Richard Williams, Notre Dame Dept of Sociology
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