A national magazine wants to determine how many books most Americans read each year. Which of the following sample groups should not be used, because the data might be biased?

A 10 men and 10 women walking downtown in 100 cities in America
B 10 people randomly surveyed on buses in 1,000 cities across America
C 15 people leaving the library in 20 major cities across America
D 100 people randomly selected while they were leaving the mall in 100 cities across America

Question

A national magazine wants to determine how many books most Americans read each year. Which of the following sample groups should not be used, because the data might be biased?

A  	 10 men and 10 women walking downtown in 100 cities in America
	 B  	 10 people randomly surveyed on buses in 1,000 cities across America
	 C  	 15 people leaving the library in 20 major cities across America
	 D  	 100 people randomly selected while they were leaving the mall in 100 cities across America

anonymous · Answer

C because the people will be inclined to read more books than the sample population