Monday, December 12, 2011

Spss binary logit model- reference category?

I am doing a binary logit model in SPSS. I am utterly confused about reference categorys. I was told that SPSS excludes one of my dummy variable and uses it as a reference category but it doesn't seem to have done this. So how do I know what it is comparing it to?





Also, I have many dummy variables relating to age, local area etc as shown below. How do I know what the model is comparing it with?





Trying to show factors predicting an increase in number of trips since having a free bus pass





Age 60-64


age 65-69


age 70-74


age 75-79


age 80+


live in rural area


live in town


live in city|||keep trying :)

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