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13.4 Information and Data
         www.ICT-Teacher.com
Objectives: Information
• Understand management information needs: the concept
  of relevance and methods of interpretation.
• Understand that information has many characteristics and
  can be classified in many ways.
• Examples include:
   –   Source - internal, external, primary, secondary
   –   Nature - quantitative, qualitative, formal, informal
   –   Level - strategic, tactical, operational
   –   Time - historical, current, future
   –   Frequency - real-time, hourly, daily, monthly
   –   Use - planning, control, decision
   –   Form - written, visual, aural, sensory
   –   Type - disaggregated, aggregated, sampled.
Objectives: Information
• Discuss the value of information in aiding the
  decision making process.
• Understand the difference between internal and
  external information requirements.
• Describe the characteristics of good information
  and delivery, e.g. relevant; accurate; complete;
  user confidence; to right person; at right time; in
  right detail; via correct channel of
  communication; understandable.
• Describe the advantages and characteristics of
  good information within an applications context.
Objectives: Data

• Understand that data may require translation or
  transcription prior to entry into the system. This
  can affect the accuracy of the data.
• Discuss the impact of quantity and quality of
  data on the method of data capture together with
  the control and audit mechanisms required to
  manage data capture.
Objectives: Effective Presentation

• Understand the effect that the method and style
  of presentation has upon the message/design in
  relation to the intended audience.
Management Needs
• Managers need information relevant to their
  needs, for planning, controlling and decision
  making.
• The information needed by managers will come
  in a different form for different purposes.
• The type of information needed will depend on
  the level of the manager as well as the particular
  task to be completed.
Classification of Information
• Information is classified according to:
   –   Source - internal, external, primary, secondary
   –   Nature - quantitative, qualitative, formal, informal
   –   Level - strategic, tactical, operational
   –   Time - historical, current, future
   –   Frequency - real-time, hourly, daily, monthly
   –   Use - planning, control, decision
   –   Form - written, visual, aural, sensory
   –   Type - disaggregated, aggregated, sampled.
Source: Internal / External
• A source document is the original document that
  brings information in.
• Internal source information; comes from within
  the organisation; e.g.
   – Staff duty rotas, holiday dates
   – Profit forecasts
• External source information; comes from outside
  the organisation; e.g.
   – Marketing information results from a questionnaire
   – Tax changes to entitlements
• The point of view is important, a telephone bill is
  an internal source to the telephone company but
  an external source to an organisation that use
  the telephone.
Source: Primary / Secondary
• A primary source of information is collected
  directly from an information source, i.e. the
  company’s loyalty card.
• A secondary source of information from the
  loyalty card would be e.g.
   – The frequency of shopping
   – The time of the day it took place
   – The different types of food bought.
Nature: Quantitative / Qualitative
• Quantitative information is measured in
  numerical terms, e.g.
  – Sales total
  – Profit or loss totals
• Qualitative information cannot usually be
  measured numerically and has to be described
  differently, e.g.
  – Staff concerns over the latest sales figures
  – Customer satisfaction and loyalty
• A computer system is able to deal with
  quantitative information much better than
  qualitative information.
Nature: Formal / Informal
• Formal information is generated from the
  organisation’s own MIS in the form of reports.
  These reports influence the decisions made on
  the running of the organisation.
• Formal information may also be in the form of a
  memo, an agenda, minutes, or a newsletter.
• Informal information is generated from
  conversations, telephone calls, notes, and
  memo’s.
• E-mail could be considered either Formal or
  Informal depending upon the information it
  contains and the circumstances.
Level of Information
• Strategic Information: used by senior managers
  and the board of directors for strategic decisions,
  e.g. a new product, a new factory, number of
  staff employed.
• Tactical Information: used by middle managers
  and is more detailed than strategic, is used for
  short term planning.
• Operational Information: used by junior
  managers for the day to day running of the
  organisation. Information is detailed and precise,
  and in most cases routine.
Time Period
• Historical Information: kept as a reference, used
  in the process of planning and making
  comparisons, e.g. a yearly sales record is used
  to make a prediction for the coming year.
  Organisations have to keep records of past
  dealings for accounting and tax purposes.
• Current Information: is being received all of the
  time, written information is better than aural as
  there is a record of it.
• Future Information: is a forecast of the results of
  events that will occur, it is useful for planning but
  is the least accurate form of information.
Frequency of Supply
• Different information is reported on at different
  intervals, such as hourly, daily, weekly, monthly
  or annually.
• Company accounts may be generated either
  quarterly or annually.
• Salary information may be generated monthly.
• Stock flow information may be generated daily or
  weekly.
• Many systems now operate in real time with the
  data being added as soon as a transaction has
  taken place, such as an airline booking process.
  The information from these transactions is
  always up to date.
Use: Planning, Control, Decision
• Information is used for planning, e.g. a new
  product will be aimed at targeted market sectors.
• Information is used to monitor and control work
  that is done e.g. the sales manager may use this
  information to find sales staff that are under
  performing.
• Information is used for decision making, e.g. to
  decide where to market the new product, or to
  decide whether to change or sack staff.
Form
• Visual: Charts, graphs, images.
• Written: forms, reports, tables, letters, provides
  physical evidence.
• Aural: by word of mouth, direct and faster.
• Sensory: touch, taste, smell, in wine making,
  cookery, etc.
Type
• Detailed Information: used at operational level,
  e.g. stock inventory.
• Aggregated Information: where detailed
  information is summed together e.g. all the sales
  from all of the departments.
• Sampled Information: where a sample only is
  required to represent the whole.
The Characteristics of Good
              Information
•   Relevant for its purpose.
•   Accurate for its purpose.
•   Complete enough for its purpose.
•   Reliable from a source in which the user has
    confidence.
•   Presented to the right person.
•   Presented in time for its purpose.
•   Contains the right level of detail.
•   Presented through the correct channel of
    communication.
•   The meaning is clear and in an understandable
    format.
• Relevance: Information relevant to the
  required purpose, the receiver should not
  have to spend time extracting what they
  want.
• Accurate: Information has to be accurate
  for decision making, it may be possible to
  use incomplete information if it is accurate.
• Completeness: Information for decisions
  should be complete or complete enough.
  At operational level it must be complete, a
  business cannot sell stock it has just run
  out of.
• Confidence: Information has to have the
  user’s confidence, if mistakes are spotted
  they may not be able to use the
  information at all.
• The Right Person: Information should only
  be passed to those who can use it, and
  not to everyone in the organisation.
• Right Time: Information that is to be
  discussed and decisions made needs to
  be available before these meetings and
  not after. Decisions can then be made
  appropriately.
• Right Detail: Information sometimes only
  needs to be presented in overview, other
  time it needs to be in detail, different levels
  of management need different levels of
  detail.
• Channel of Communication: Information
  should travel a well managed channel
  between people, includes the type of
  format, and internal/external.
• Understandable: Information should be
  presented clearly to the user, fully
  understandable and unambiguous.
Data Capture
• Data capture involves getting data into a
  form that can be processed by the
  computer.
• The ideal scenario would be:
  – Accurate, Fast, Automatic and Cheap.
• Methods include:
  – Keyboard, MICR, OCR, OMR, and voice
    recognition.
Data Capture
• Data can be transferred from one method
  to another, eliminating human
  involvement, reduces greatly the chances
  of error.
• Special documents are designed to collect
  data in a form that is easily transferred into
  an input document (data capture form).
Accuracy
• Audit checking of transactions are
  necessary to ensure the results are correct
  and not interfered with.
• Audit trails can be processed as a trace of
  the processing of data throughout the
  whole automated process.
• This can prevent fraud.
Accuracy
• Verification of input data;
  – Double checking, or comparing the input
    with the source document, or two
    operators inputting the same data one
    checked against the other.
  – The source document may have been
    completed incorrectly!
Validation
• A computerised check that data meets
  certain criteria.
• Range check: pre-programmed upper and
  lower boundaries of acceptable data which
  is checked against for each entry, e.g.
  only dates between today and a month
  ahead may be allowed.
• Data Type check: pre-programmed data
  type to ensure the correct data type, e.g. a
  name is not entered into a date field.
Validation
• Existence check: pre-programmed to force
  acceptance of data, e.g. account number.
• Consistency check: pre-programmed so
  that data entered is checked against it
  being present, e.g. enter a stock number
  that already exists in a database.
Effective Presentation of
              Information
• Database Reports:
  – Use of selective information, not
    complete tables.
  – Logical groupings, sorted, easy to read.
  – Printed as a report using standard
    consistent formatting.
• Different types of report are:
  – Operational: daily work, weekly sales
    etc,
  – Summary: summarised the high volume
    of data,
  – Exception: trends, unusual figures, up to
    date and not waiting for the regular
    reports.
• Presentational Graphics:
  – Text charts: brief, handouts for
    presentations,
  – Graph charts: column, pie, for displaying
    numerical information,
  – Slide show: series of slides, can be
    printed for handouts,
  – Pictures: alongside slides or text to
    illustrate, use of photographs, clip art,
    company logos etc are useful.
• Doyle pages: 196-201, 203-205.

• Exercise: Activity pages: 197, 198.

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13.4 information and data

  • 1. 13.4 Information and Data www.ICT-Teacher.com
  • 2. Objectives: Information • Understand management information needs: the concept of relevance and methods of interpretation. • Understand that information has many characteristics and can be classified in many ways. • Examples include: – Source - internal, external, primary, secondary – Nature - quantitative, qualitative, formal, informal – Level - strategic, tactical, operational – Time - historical, current, future – Frequency - real-time, hourly, daily, monthly – Use - planning, control, decision – Form - written, visual, aural, sensory – Type - disaggregated, aggregated, sampled.
  • 3. Objectives: Information • Discuss the value of information in aiding the decision making process. • Understand the difference between internal and external information requirements. • Describe the characteristics of good information and delivery, e.g. relevant; accurate; complete; user confidence; to right person; at right time; in right detail; via correct channel of communication; understandable. • Describe the advantages and characteristics of good information within an applications context.
  • 4. Objectives: Data • Understand that data may require translation or transcription prior to entry into the system. This can affect the accuracy of the data. • Discuss the impact of quantity and quality of data on the method of data capture together with the control and audit mechanisms required to manage data capture.
  • 5. Objectives: Effective Presentation • Understand the effect that the method and style of presentation has upon the message/design in relation to the intended audience.
  • 6. Management Needs • Managers need information relevant to their needs, for planning, controlling and decision making. • The information needed by managers will come in a different form for different purposes. • The type of information needed will depend on the level of the manager as well as the particular task to be completed.
  • 7. Classification of Information • Information is classified according to: – Source - internal, external, primary, secondary – Nature - quantitative, qualitative, formal, informal – Level - strategic, tactical, operational – Time - historical, current, future – Frequency - real-time, hourly, daily, monthly – Use - planning, control, decision – Form - written, visual, aural, sensory – Type - disaggregated, aggregated, sampled.
  • 8. Source: Internal / External • A source document is the original document that brings information in. • Internal source information; comes from within the organisation; e.g. – Staff duty rotas, holiday dates – Profit forecasts • External source information; comes from outside the organisation; e.g. – Marketing information results from a questionnaire – Tax changes to entitlements • The point of view is important, a telephone bill is an internal source to the telephone company but an external source to an organisation that use the telephone.
  • 9. Source: Primary / Secondary • A primary source of information is collected directly from an information source, i.e. the company’s loyalty card. • A secondary source of information from the loyalty card would be e.g. – The frequency of shopping – The time of the day it took place – The different types of food bought.
  • 10. Nature: Quantitative / Qualitative • Quantitative information is measured in numerical terms, e.g. – Sales total – Profit or loss totals • Qualitative information cannot usually be measured numerically and has to be described differently, e.g. – Staff concerns over the latest sales figures – Customer satisfaction and loyalty • A computer system is able to deal with quantitative information much better than qualitative information.
  • 11. Nature: Formal / Informal • Formal information is generated from the organisation’s own MIS in the form of reports. These reports influence the decisions made on the running of the organisation. • Formal information may also be in the form of a memo, an agenda, minutes, or a newsletter. • Informal information is generated from conversations, telephone calls, notes, and memo’s. • E-mail could be considered either Formal or Informal depending upon the information it contains and the circumstances.
  • 12. Level of Information • Strategic Information: used by senior managers and the board of directors for strategic decisions, e.g. a new product, a new factory, number of staff employed. • Tactical Information: used by middle managers and is more detailed than strategic, is used for short term planning. • Operational Information: used by junior managers for the day to day running of the organisation. Information is detailed and precise, and in most cases routine.
  • 13. Time Period • Historical Information: kept as a reference, used in the process of planning and making comparisons, e.g. a yearly sales record is used to make a prediction for the coming year. Organisations have to keep records of past dealings for accounting and tax purposes. • Current Information: is being received all of the time, written information is better than aural as there is a record of it. • Future Information: is a forecast of the results of events that will occur, it is useful for planning but is the least accurate form of information.
  • 14. Frequency of Supply • Different information is reported on at different intervals, such as hourly, daily, weekly, monthly or annually. • Company accounts may be generated either quarterly or annually. • Salary information may be generated monthly. • Stock flow information may be generated daily or weekly. • Many systems now operate in real time with the data being added as soon as a transaction has taken place, such as an airline booking process. The information from these transactions is always up to date.
  • 15. Use: Planning, Control, Decision • Information is used for planning, e.g. a new product will be aimed at targeted market sectors. • Information is used to monitor and control work that is done e.g. the sales manager may use this information to find sales staff that are under performing. • Information is used for decision making, e.g. to decide where to market the new product, or to decide whether to change or sack staff.
  • 16. Form • Visual: Charts, graphs, images. • Written: forms, reports, tables, letters, provides physical evidence. • Aural: by word of mouth, direct and faster. • Sensory: touch, taste, smell, in wine making, cookery, etc.
  • 17. Type • Detailed Information: used at operational level, e.g. stock inventory. • Aggregated Information: where detailed information is summed together e.g. all the sales from all of the departments. • Sampled Information: where a sample only is required to represent the whole.
  • 18. The Characteristics of Good Information • Relevant for its purpose. • Accurate for its purpose. • Complete enough for its purpose. • Reliable from a source in which the user has confidence. • Presented to the right person. • Presented in time for its purpose. • Contains the right level of detail. • Presented through the correct channel of communication. • The meaning is clear and in an understandable format.
  • 19. • Relevance: Information relevant to the required purpose, the receiver should not have to spend time extracting what they want. • Accurate: Information has to be accurate for decision making, it may be possible to use incomplete information if it is accurate. • Completeness: Information for decisions should be complete or complete enough. At operational level it must be complete, a business cannot sell stock it has just run out of.
  • 20. • Confidence: Information has to have the user’s confidence, if mistakes are spotted they may not be able to use the information at all. • The Right Person: Information should only be passed to those who can use it, and not to everyone in the organisation. • Right Time: Information that is to be discussed and decisions made needs to be available before these meetings and not after. Decisions can then be made appropriately.
  • 21. • Right Detail: Information sometimes only needs to be presented in overview, other time it needs to be in detail, different levels of management need different levels of detail. • Channel of Communication: Information should travel a well managed channel between people, includes the type of format, and internal/external. • Understandable: Information should be presented clearly to the user, fully understandable and unambiguous.
  • 22. Data Capture • Data capture involves getting data into a form that can be processed by the computer. • The ideal scenario would be: – Accurate, Fast, Automatic and Cheap. • Methods include: – Keyboard, MICR, OCR, OMR, and voice recognition.
  • 23. Data Capture • Data can be transferred from one method to another, eliminating human involvement, reduces greatly the chances of error. • Special documents are designed to collect data in a form that is easily transferred into an input document (data capture form).
  • 24. Accuracy • Audit checking of transactions are necessary to ensure the results are correct and not interfered with. • Audit trails can be processed as a trace of the processing of data throughout the whole automated process. • This can prevent fraud.
  • 25. Accuracy • Verification of input data; – Double checking, or comparing the input with the source document, or two operators inputting the same data one checked against the other. – The source document may have been completed incorrectly!
  • 26. Validation • A computerised check that data meets certain criteria. • Range check: pre-programmed upper and lower boundaries of acceptable data which is checked against for each entry, e.g. only dates between today and a month ahead may be allowed. • Data Type check: pre-programmed data type to ensure the correct data type, e.g. a name is not entered into a date field.
  • 27. Validation • Existence check: pre-programmed to force acceptance of data, e.g. account number. • Consistency check: pre-programmed so that data entered is checked against it being present, e.g. enter a stock number that already exists in a database.
  • 28. Effective Presentation of Information • Database Reports: – Use of selective information, not complete tables. – Logical groupings, sorted, easy to read. – Printed as a report using standard consistent formatting.
  • 29. • Different types of report are: – Operational: daily work, weekly sales etc, – Summary: summarised the high volume of data, – Exception: trends, unusual figures, up to date and not waiting for the regular reports.
  • 30. • Presentational Graphics: – Text charts: brief, handouts for presentations, – Graph charts: column, pie, for displaying numerical information, – Slide show: series of slides, can be printed for handouts, – Pictures: alongside slides or text to illustrate, use of photographs, clip art, company logos etc are useful.
  • 31. • Doyle pages: 196-201, 203-205. • Exercise: Activity pages: 197, 198.