Data and information

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Difference between data and information

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Data and information

  1. 1. OBJECTIVES: TO UNDERSTAND WHAT IS DATA TO UNDERSTAND WHAT IS INFORMATION TO DIFFERENTIATE BETWEEN DATA AND INFORMATION
  2. 2. DATA MEANS RAW FACTS AND FIGURES INFORMATION IS THE RESULT OF PROCESSING
  3. 3. WHAT IS DATA?  Facts, statistics used for reference or analysis.  Numbers, characters, symbols, images etc., which can be processed by a computer.  Data must be interpreted, by a human or machine, to derive meaning  So data is meaningless
  4. 4. DATA EXAMPLES Yes, Yes, No, Yes, No, Yes, No, Yes 42, 63, 96, 74, 56, 86 111192, 111234 None of the above data sets have any meaning until they are given a CONTEXT and PROCESSED into a useable form
  5. 5. DATA CAN TAKE MANY FORMS ALPHANUMERIC DATA (COMBINATION OF NUMBERS AND LETTERS) TEXT DATA (SENTENCES & PARAGRAPHS USED IN WRITTEN COMMUNICATION) IMAGE DATA (GRAPHICS, SHAPES, FIGURES ETC) AUDIO (HUMAN VOICE & OTHER SOUNDS)
  6. 6. WHAT IS INFORMATION? Data that has been processed within a context to give it meaning. "Information is data that has been processed” "Information is interpreted data" Information is meaningful
  7. 7. Data need to be turned into meaningful information and presented in its most useful format  For example: What does the number 29061996 mean?  Is it:  A birthday? (29th June 1996)  A bank account number?  A club membership number?  A telephone number?  Without processing or more information this data is meaningless.
  8. 8. EXAMPLE 1
  9. 9.  The colour red is data as it has no meaning.  What information we attach to the red colour is information  For example:  On a traffic light it means STOP.  In a football match a red card means that the player has been suspended.  In certain places the red colour may mean a danger zone. EXAMPLE 2
  10. 10. INPUT DATA DATA IS PROCESSED OUTPUT INFORMATION DATA Is put in USING INPUT DEVICES e.g. KEYBOARD INFORMATION Is produced ON OUTPUT DEVICES e.g. MONITOR Data is meaningless Information is meaningful Process can be: Manipulation of data. E.g. arithmetic operations, comparing, sorting, searching
  11. 11. IN SIMPLE TERMS WE CAN SAY THAT: DATA IS RAW FACTS AND FIGURES & DATA IS MEANINGLESS WHILE INFORMATION IS DATA THAT HAS BEEN PROCESSED INFORMATION IS MEANINGFUL
  12. 12. QUESTION 1  In a factory, we use ______________________ as input to produce _____________________ which is the output. Choose between data or information  30,52,68,25,36,24 ________________.  Stop signal from a traffic light________________.  ☺♣♠•◘☻♥♦ ___________________.  A yellow card in a football match_____________.
  13. 13. a) What is data? [2marks] b) What is information? [2marks] c) State two examples of data. [2marks] d) State two examples of information. [2marks] e) What is the data that has been organized or presented in a meaningful fashion? [1 mark] f) How does the computer convert data into information? [1 mark]

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