Does a sample size of 160 observations have enough degrees of freedom, if I have 18 dummy variables when I run OLS?

[Mirjana Grkovska]

Hi All,

Please if anyone can answer whether I am having enough degrees of freedom in my sample size? I am running OLS and I control for 18 indepdendant varibales.

I read that I should multiple the number of independant varibales by 5 and the result needs to be smaller than my sample size. So in my case 18*5=90 < 160 (number of observations). Is this correct? Should I proceed with my analysis.

Many thanks,
Mirjana

[Carlo Lazzaro]

Mirjana:
the following thread might be interesting:

https://www.statalist.org/forums/for...-t-3-be-enough

[Mirjana Grkovska]

Hi Carlo,

Thank you for drawing my attention to that thread. I think I have answered my questions.

Have a great weekend,
Mirjana

[Carlo Lazzaro]

You too.