Evaluating Evidence

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  • Evaluating the use of Evidence
    • Sample size
      • the smaller a sample size the less reliable - a sample size of around 1000 people is very accurate.
    • Representatives
      • A sample of data needs to represent everyone in a communtiy - every race, gender, religion, age etc...
    • Circumstance of Data Collection
      • If data is not carefully collected it is less reliable. - the most reliable evidence is collected by professional collectors in controlled conditions
    • Generalisability
      • for data to be reliable it should be collected resently and should be relevant to a location, situation or types of people being discussed
    • Ambiguity of Findings
      • The way that data is used - Ambiguity - there is more than one possible meaning
    • Interpretation of statistics
      • the use of averages can give a misleading impression - have the statistics been averaged - ie has the mean, median, mode or range been used


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