Hello, I am searching for any information regarding the following people whose last name back in 1930 was Rosen:

Max Rosen, Age 35
Ida Rosen age 32
Annette, age 6
Shirley, daughter, age 4
A(O)llice, daughter age 3
miriam, daughter age 1

Does anyone know what it means if there is a name listed on a census with an age, but it does not say mother/father
son/daughter next to it? Any information is appreciated. thank you very much. Bye Jaime