Excuse me in advance if I make some grammatical mistakes, I am French, but I will do my best.
I am facing a problem when I run a multiple linear regression. Indeed, in the detailed report, some data are missing and I don't know where the problem comes from and how to fix it.
I'm attaching a picture of the problem (I have highlighted in red the data that are missing).
For information, my dependent variable is ROE and among my independant variables I have some dummy variables : "Family firms", "GICS1",..., "GICS9". And the issue come from the GICS 2 and the GICS 3 variables, which are dummy variables (see attached picture)