Unit One - Data and Quality of Data

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  • Data and Quality of Data
    • Data consists of raw facts and figures
    • Information is data with a meaning
    • Knowledge is the way that we can understand and use the information
    • GIGO stands for garbage in, garbage out
    • For data to be useful it must be fit for purpose, accurate, non-biased, up to date and valid
    • Validation checks information is reliable
    • Verification checks information is correct
    • Range check - checks numbers lie within an acceptable range
    • Presence check - checks to see not data is missing
    • Format check - data is in the correct format

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