EDEXCEL AS LEVEL MATHS STATISTICS QUESTIONS AND ANSWERS

EDEXCEL AS LEVEL MATHS
STATISTICS QUESTIONS AND ANSWERS



Population - ANSWER: The whole set of items that are of interest
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Census - ANSWER: Observes or measures every member of a population
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Sample - ANSWER: A selection of observations taken from a subset of the population
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which is used to find out information about the population as a whole
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Sampling Units - ANSWER: Individual units of a population
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Sampling Frame - ANSWER: A list of individually named or numbered sampling units
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Simple Random Sample - ANSWER: A sample where every sampling unit has an
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equal chance of being chosen
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Systematic Sampling - ANSWER: A method of sampling where the required elements
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are chosen at regular intervals from an ordered list
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Stratified Sampling - ANSWER: A method of sampling where the population is divided
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into mutually exclusive strata and a random sample is taken from each
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Quota Sampling - ANSWER: A method of sampling where a researcher selects a
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sample that reflects the characteristics of the whole population
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Opportunity Sampling - ANSWER: A method of sampling where the people sampled
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are those who are available at the time the study is carried out and who fit the
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criteria you are looking for
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Quantitative Variables/Data - ANSWER: Variables or data associated with numerical
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observations
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Qualitative Variables/Data - ANSWER: Variables or data associated with non-
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numerical observations bb




Continuous Variable - ANSWER: A variable that can take any value in a given range
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