| Q1: |
When a sample does not accurately represent the group
from which it is taken this is called: |
A. a census
B. a biased sample
C. a random sample
D. a population |
Answer 1: |
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| Q2: |
How often is a CENSUS held in New Zealand? |
A. Every three years
B. Every hundred years
C. Every year
D. Every five years |
Answer 2: |
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| Q3: |
If a sample is taken and it is not random, any conclusions are likely to be: |
A. very accurate
B. unbiased
C. biased
D. wrong |
Answer 3: |
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| Q4: |
A sample for a survey on the eating habits of all New Zealanders is taken by selecting every 100th person in the telephone directory. Would this produce a random sample? |
A. No
B. Yes |
Answer 4: |
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| Q5: |
True or false?
In the Lotto draw, the seven balls chosen form a random sample?
|
A. True
B. False |
Answer 5: |
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| Q6: |
The first 20 people to arrive at work are asked their opinions of the boss! Would the results of this survey be likely to be biased? |
A. No
B. Yes |
Answer 6: |
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| Q7: |
True or false?
Bias in a survey can be avoided by selecting random samples
|
A. True
B. False |
Answer 7: |
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| Q8: |
A sample for a survey on the study habits of all students in a secondary school is taken by selecting every 10th person on the school roll. Would this produce a random sample? |
A. No
B. Yes |
Answer 8: |
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| Q9: |
True or false?
In a random sample every member of the population has the chance of being selected.
|
A. True
B. False |
Answer 9: |
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| Q10: |
A survey which covers every member of a population is called |
A. a random sample
B. a biased sample
C. a census
D. an election |
Answer 10: |
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