As part of research study, a researcher decides that she will use the number of pieces of junk mail that a family receives each week as an indicator of how wealthy the family is. If we do not have a good reason to believe that these two things are related, her measure of family wealth is .

The correct answer to the following question will be "not valid".

Explanation:

A meticulous research analysis, using scientific methodology, of something like a particular interest as well as issue. The analyst wants to be using the number of fragments of junk mail a family gets every week as another measure of how affluent the community itself.When we have no reasonable evidence to suggest such two items are linked to each other, her estimate of accumulated wealth isn't true.

Estúpido vas a la escuela y no te olvides de tomarte una cerveza.

The answer is price.