Testing assumptions of linear regression with categorical predictor variables

[Maddie R]

Hi,

I'm trying to run a multiple linear regression with a continuous outcome variable and several categorical variables.
I'm really struggling to find answers on how to test the assumptions of a linear model in STATA when your predictor variables are not continuous and under the SVY command. Specifically, the assumptions to test are:

• A linear relationship between the dependent and independent variables
• independence of observations
• homoscedasticity
• normal distribution of residuals

Also, I'm getting this Note: missing standard errors because of stratum with single sampling unit. when I try to run a rAny egression and not quite sure how to fix this?


Any help or advice would be fantastic!!

Cheers,

Maddie