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Q1:
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If a sample is taken for a survey and every member of a population has an equal chance of being chosen the sample is said to be: |
A. complete
B. selective
C. biased
D. random |
Answer 1: |
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Q2:
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When a sample does not accurately represent the group from which it is taken, it is called: |
A. a census
B. a biased sample
C. a random sample
D. a population |
Answer 2: |
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Q3:
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A census involves surveying every member of a population.
True or false?
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A. True
B. False |
Answer 3: |
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Q4:
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If a sample is taken and it is not random, any conclusions are likely to be:
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A. very accurate
B. unbiased
C. wrong
D. biased |
Answer 4: |
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Q5:
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How often is a CENSUS held in New Zealand and Australia?
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A. Every five years
B. Every hundred years
C. Every year
D. Every three years |
Answer 5: |
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Q6:
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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. Yes
B. No |
Answer 6: |
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Q7:
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True or false?
Bias in a survey can be avoided by selecting random samples.
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A. False
B. True |
Answer 7: |
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Q8:
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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 alphabetical school roll. Would this produce a random sample? |
A. Yes
B. No |
Answer 8: |
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Q9:
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True or false?
In a random sample every member of the population has the chance of being selected.
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A. True
B. False |
Answer 9: |
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Q10:
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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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