Davina selected 50 people at random and asked them whether they had watched the documentary on Antarctica on television the previous night. She repeated this survey using the same method three more times.

Do any of the surveys appear to be biased?

Watched Antarctica documentary last night? Survey
1 2 3 4
Yes 13 14 35 17
No 37 36 15 33

A.
Yes, because all four surveys do not have identical results.

B.
Yes, because the results from Survey 3 differ significantly from the other surveys’ results.

C.
No, because Davina surveyed the same number of people

Question

Davina selected 50 people at random and asked them whether they had watched the documentary on Antarctica on television the previous night. She repeated this survey using the same method three more times.
 
Do any of the surveys appear to be biased?
 
Watched Antarctica documentary last night?	Survey
1	2	3	4
Yes	13	14	35	17
No	37	36	15	33
 
 
 A.
Yes, because all four surveys do not have identical results.
 
 B.
Yes, because the results from Survey 3 differ significantly from the other surveys’ results.
 
 C.
No, because Davina surveyed the same number of people

anonymous · Answer

Does any of the survey results look different from the others?

anonymous · Answer

I took this test already and got an 80%. The right answer was b. Thanks any way.