Eduardo needs to find information about income and age distribution in Dallas county, Texas. The best source of secondary research of use to Eduardo is likely to be the US census data.
What is the US census data?
This is the data that is known to be made from the census that is taken in the country to determine the people of the nation that are in the country at that period of time. The census data is known to contain a lot of variables that help to determine the economic well being of that area.
This is secondary source of data. This is due to the fact that the data is already known to be existent in a place. It was not gotten directly by Eduardo in the field.
Read more on secondary data here: https://brainly.com/question/14806486
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