Question 1

Do these different censuses record the same Mildred Aaberg as described in 1950? 

Answer

Definitely yes: All details are consistent with each other.

Most likely yes: Some details do not line up but mostly they are consistent.

The 1920 and 1940 census mostly line up with 1950 but the 1930 census definitely does not.

The 1940 census definitely lines up with 1950 but the 1920 and 1930 censuses mostly do not.

Probably not: Some details are the same but mostly they are inconsistent.

Definitely not: No details in the 1920, 1930, or 1940 censuses are consistent with the 1950 census.