Which of the Following Best Illustrates What Is Meant by Validating

Multiple Choice

Which of the following best illustrates what is meant by validating the sample?

A) buying samples only from a well-known and respected sampling firm
B) using samples that have,in the past,provided reliable and valid results
C) comparing the sample's profile with a known profile such as the census
D) confirming the manager's approval
E) There is no way to "validate" a sample.This is why probability sampling methods are so important.