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Information Processes and
               Technology
                Analysing
In this unit you will
 Learn about the difference between
  data and information
 See how data can be searched and
  sor...
Analysing
   The process by which data can be
    represented and summarised so that
    humans can better understand it.
Data Vs. Information

     DATA            INFORMATION


  Data are raw       Information is
facts, items that     data th...
Searching for patterns
   A common analysing task is to
    search data for particular values or
    patterns
Searching text data
   When searching text data, an
    information system will compare the
    text data with the search...
Searching text data
 There
      are two types of data
 matching that can be used
  Exact matching
  Wildcard matching
Exact matching
 Allthe characters in the search
  key must be described before
  the search begins.
 The same sequence o...
Exact match search
keyword: manage
   Office management:
    The current manager, Mrs. Healey,
    has recently returned ...
Exact match search
keyword: manage
Office management:
 The current manager, Mrs. Healey,
 has recently returned from a
 ma...
Wildcard matching
 Not all the characters in the
  search key have to be described
  before the search begins.
 You can ...
Wildcard matching
 Wildcard   matches use the
  symbols ‘?’ and ‘*’
  to represent other characters.
? means a compulsary...
Wildcard matching example
 The    search key ‘h?t’ can be
    used to search for ‘hot’, ‘hit’,
    ‘hat’ and any three ch...
Wildcard matching example
 The ‘*’ wildcard character is used to
  represent zero or more additional
  characters in the ...
Wildcard search: Match
manage*
 Office management:
    The current manager, Mrs.
  Healey, has recently returned from a
...
Wildcard match search
keyword: manage*
Office management:
 The current manager, Mrs. Healey,
 has recently returned from a...
Activity: h*t
   The halibut was extremely hot! said
    the man with the hat




                                   19
Activity: h?t
   The halibut was extremely hot! said
    the man with the hat




                                   20
Sorting
 Sorting puts data into a set order.
 A useful first step in transforming
  collected data into information.
 I...
Sorting


Data Type   Ascending   Descending

  Text       A to Z       Z to A

Numerical    0 to 9       9 to 0
‘What-if’ analysis
   Allows a user to make temporary
    alterations to data to observe the effects
    on a model.
   ...
Charts & Graphs
 Charts and graphs are popular
  methods for analysing data.
 They can show relationship, trends
  and c...
Charts & Graphs -
ADVANTAGES
   Impact – the use of colours, symbols and
    fill patterns can draw attention to
    impo...
Coast Pd   Analysing
Coast Pd   Analysing
Coast Pd   Analysing
Coast Pd   Analysing
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Coast Pd Analysing

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Tools for information processes, for information processes and technology stage 6 HSC

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Coast Pd Analysing

  1. 1. Information Processes and Technology Analysing
  2. 2. In this unit you will  Learn about the difference between data and information  See how data can be searched and sorted as part of the analysing process  Learn about charts as analysing tools
  3. 3. Analysing  The process by which data can be represented and summarised so that humans can better understand it.
  4. 4. Data Vs. Information DATA INFORMATION Data are raw Information is facts, items that data that are have no Meaningful, that meaning or clear have a clear purpose purpose
  5. 5. Searching for patterns  A common analysing task is to search data for particular values or patterns
  6. 6. Searching text data  When searching text data, an information system will compare the text data with the search key  A search key is the set of text characters that the analysing process attempts to find in the collected data.
  7. 7. Searching text data  There are two types of data matching that can be used  Exact matching  Wildcard matching
  8. 8. Exact matching  Allthe characters in the search key must be described before the search begins.  The same sequence of characters must be present in the text data for the search to be successful.
  9. 9. Exact match search keyword: manage  Office management: The current manager, Mrs. Healey, has recently returned from a management conference where she presented a paper on how to manage an office staffed by part- time workers. Her experiences in this new area of management skills were well 11
  10. 10. Exact match search keyword: manage Office management: The current manager, Mrs. Healey, has recently returned from a management conference where she presented a paper on how to manage an office staffed by part- time workers. Her experiences in this new area of management skills were well
  11. 11. Wildcard matching  Not all the characters in the search key have to be described before the search begins.  You can replace individual characters or whole groups of characters
  12. 12. Wildcard matching  Wildcard matches use the symbols ‘?’ and ‘*’ to represent other characters. ? means a compulsary value and indicates the number of letters.
  13. 13. Wildcard matching example  The search key ‘h?t’ can be used to search for ‘hot’, ‘hit’, ‘hat’ and any three characters where the first character is ‘h’ and the last character is ‘t’ 
  14. 14. Wildcard matching example  The ‘*’ wildcard character is used to represent zero or more additional characters in the search key.  It means ‘match the entered text characters plus any following characters up to the first space, punctuation, or non-displayable character.
  15. 15. Wildcard search: Match manage*  Office management:  The current manager, Mrs. Healey, has recently returned from a management conference where she presented a paper on how to manage an office staffed by part- time workers. Her experiences in this new area of management skills were well 17
  16. 16. Wildcard match search keyword: manage* Office management: The current manager, Mrs. Healey, has recently returned from a management conference where she presented a paper on how to manage an office staffed by part- time workers. Her experiences in this new area of management skills were well
  17. 17. Activity: h*t  The halibut was extremely hot! said the man with the hat 19
  18. 18. Activity: h?t  The halibut was extremely hot! said the man with the hat 20
  19. 19. Sorting  Sorting puts data into a set order.  A useful first step in transforming collected data into information.  Imagine a telephone book if the names were not in alphabetical order.
  20. 20. Sorting Data Type Ascending Descending Text A to Z Z to A Numerical 0 to 9 9 to 0
  21. 21. ‘What-if’ analysis  Allows a user to make temporary alterations to data to observe the effects on a model.  One of the advantages of a spreadsheet application is its ability to quickly recalculate a sheet full of equations whenever a single data item is altered.
  22. 22. Charts & Graphs  Charts and graphs are popular methods for analysing data.  They can show relationship, trends and comparisons at a glance.  A much faster way to absorb information than a table full of figures.
  23. 23. Charts & Graphs - ADVANTAGES  Impact – the use of colours, symbols and fill patterns can draw attention to important details in the data  Speed - the trends shown in a well- drawn chart or graph can be very obvious  Simplicity – almost anyone can understand a message displayed in a chart or graph, where the same message would be lost in rows and columns of boring figure.

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