STAT 200 PSU Quiz 1 STAT 200 PSU Quiz 1

1.

A census differs from a sample survey because

[removed]A) a sample survey is only done when measuring the units will destroy them. 
[removed]B) a census is only done when measuring the units will destroy them. 
[removed]C) in a sample survey the whole population is measured. 
[removed]D) in a census the whole population is measured. 

Feedback: A census is designed to measure the entire population while a sample is a subgroup of the population

2.

When a representative sample is selected but respondents give answers that are different from their true opinions, the problem is called

[removed]A) lack of accuracy. 
[removed]B) selection bias. 
[removed]C) nonresponse bias. 
[removed]D) response bias. 

Feedback: Response bias is the result of respondents providing answers that are not necessarily their true opinions but instead are opinions they believe the researcher wants to hear or when respondents are afraid to say their true thoughts