I have the following question: Estimate a simple regression model of ‘libertarian-authoritarian’ attitude as a function of age groups and comment on the sign, significance and magnitude of the effects. I have one variable (and only one) called AgeGr and the age groups are 18-25, 26-35, 36-45, 46-55, 56-65 and 66+. How should i do a regression on this? Should i just do a regress libauth on AgeGr or should I separate the age groups such as having a separate dummy variable for every age group and then run a regression on every age group. (i.e. regress libauth on AgeGr18-25). So I would do 6 regressions. And also, how should i interpret the results? If i did the first way (without separation), should i interpret it such as increasing the age group by one (i.e from 18-25 to 26-35) leads to a xy change in libauth.

Cheers,

Andras