MATHS STATISTICS

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Last updated 2:59 PM on 6/5/26
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6 Terms

1
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census

measures every member of a population

strengths: accurate result

weaknesses: expensive

2
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simple random sampling

gives everything the same chance of being selected

strengths: bias free

weaknesses: need a sampling frame/ know everything

3
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systematic sampling

take every kth unit where k= population/sample size

strength: quick to use

weaknesses: need a sampling frame

4
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stratified sampling

sample represents a group of a population

sample/ population x group

strengths: represents a population

weaknesses: represented in groups

5
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quota sampling

groups filled by researcher

strength: no sampling frame

weaknesses: potential bias

6
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opportunity sampling

quota filled by those available at the time

strengths: cheap and easy

weakness: unlikely to be representative of all