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15 Cards in this Set
- Front
- Back
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give a definition of DATA
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data consists of raw facts and figures or records of transactions
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Give a definition of INFORMATION
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INFORMATION is data that has been processsed by the computer or that has been given a context
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give a definition of KNOWLEDGE
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KNOWLEDGE is derived from information by applying rules to it.
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give example 1 showing the relationship between data information and knowledge
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10,11,12,13,10,9,8,6,7,9,10,11, is data ...Giving these the context of rainfall figures makes them information....The knowledge gained is when it is best to book a holiday.
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give example 2 of the relationship between data information and knowledge
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9:00, 135/75, 10:00, 135/75, 11:00, 120/60. is data... to render the data as information if first must be given a context e.g. medical - a patient's blood pressure readings and to make it more understandable it is put into a table .... The doctor can now apply her knowledge to this information. She can then draw conclusions about the patient’s health and take appropriate actions.
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give the mnemonic for the ADVANTAGES of CODING DATA before entering it.
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As TIME passes and sir gets older he has LESS MEMORY but makes FEWER ERRORS despite having to SEARCH FASTER his brain for information
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1st Advantage of Coding Data
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Saves time typing
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2nd Advantage of Coding Data
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Reduces the amount of hard disk space / less memory required – NOT just saying less space
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3rd Advantage of Coding Data
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Lessens the chance of entry errors / easier to validate / greater consistency.
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4th Advantage of Coding Data
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Faster to search
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What is first type of problem that ENCODING VALUE JUDGEMENTS can cause
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Coarsening Data and Loss of Precision
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Give an example of the first type of problem of ENCODING VALUE JUDGEMENTS
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e.g. Hair colour survey ....light brown, mousey, dark brown would all be classified as brown because all the categories are not present.
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What is the second type of problemt the ENCODEING VALUE JUDGEMENTS causes
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Subjective judgements have to be made
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Give an example of the first type of problem of ENCODING VALUE JUDGEMENTS
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e.g. someone may be asked was that meal ‘Excellent’, ‘Very Good’, ‘Good’, or ‘Poor’. One person’s excellent meal is only a good meal for another.
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What is the difference between ENCODING and ENCRYPTION of data?
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Encoding is giving something a shortened code for the purpose of data entry… e.g. GB for Great Britain… encryption is scrambling things like credit card details so they can’t be read.
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