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GCSE Statistics Verified Solutions

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GCSE Statistics Verified Solutions Population ️️A collection of all the items Sample ️️A selection of the population to use data from Census ️️When data is taken from every member in the population Advantages of a census over a sample ️️More representative, less biased, incl...

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  • November 14, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
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GCSE Statistics Verified Solutions

Population ✔️✔️A collection of all the items



Sample ✔️✔️A selection of the population to use data from



Census ✔️✔️When data is taken from every member in the population



Advantages of a census over a sample ✔️✔️More representative, less biased, includes everyone's
opinions



Advantages of a sample over a census ✔️✔️Quicker, cheaper, easier to analyse as less data



Disadvantages of a census over a sample ✔️✔️Time consuming, expensive, difficult to do



Disadvantages of a sample over a census ✔️✔️Less representative, possibly biased



Pilot Study ✔️✔️A small scale replica of the survey to be carried out.



Advantages of a pilot study ✔️✔️Ensures questions can be understood, identify ambiguity, test
response rate, identifies likely responses, check methods



Sampling Frame ✔️✔️A list containing data that a sample can be taken from



Examples of a sampling frame ✔️✔️Electoral role, SIMS register, DVLA, telephone directory



Primary Data ✔️✔️Data that has been collected by the person doing the survey

, Secondary data ✔️✔️Data that hasn't been collected by the person doing the survey



Advantages of primary data ✔️✔️More reliable, up-to-date, tailored for investigation



Advantages of secondary data ✔️✔️Easier to obtain, cheaper, less time-consuming



Continuous Data ✔️✔️Data that lies on a continuous scale (can be at any point on a number line)



Discrete Data ✔️✔️Data that consists of separate numbers (jumps along the number line)



Quantitative Data ✔️✔️Data that has numerical values



Qualitative Data ✔️✔️Data that is not numerical values



Open Questions ✔️✔️Has no suggested answers and has freeform boxes to reply in



Advantages of open questions ✔️✔️Allows for a range of responses, so can cover all eventualities



Closed Questions ✔️✔️Has a set of answers for the person to choose from



Advantages of closed questions ✔️✔️Easier to analyse as range of responses restricted



Leading Questions ✔️✔️Questions that infer an opinion and promote a certain answer



Convenience Sample ✔️✔️The first so many pieces of data in the list are sampled



Advantages of a convenience sample ✔️✔️Quick and easy

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