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• Data processing is a series of steps to extract information from raw data
• Stages of Data Processing Cycle

  • Each order must be taken in order: order is acrylic

  1. Collection of data
  2. Preparation of data
  3. Input of data
  4. Processing of data
  5. Output of information
•  1. Collection

  • First stage of cycle
  • Crucial since the quality of data collected will impact on the output
  • Data gathered must be defined and accurate
  • Types: Census, sample survey, administrative by-product
• Preparation

  Manipulation of data for further analysis and processing

  Raw data cannot be processed and  must be checked for accuracy

  It is about Construction of dataset from one or more sources
• Input

  Task where verified data coded or converted into machine-readable form

  Data entry methods: Keyboard, digitizer, scanner

  Requires speed and accuracy

  Formal and strict syntax for processing complex data
• Processing

  ·         When the data subjected to manipulation methods

  ·         Execution of computer program

  ·         Made up of multiple threads of execution

  ·         Software programs available for processing large volumes of data
• Output and Interpretation

  ·         Where processed information transmitted to user

  ·         Presented in various report formats

  ·         Output interpreted for meaningful information
• Storage

  ·         Last stage in cycle

  ·         Data, instruction, and information held for future use

  ·         Allows quick access and retrieval of processed information
• Data processing is defined as: "a sequence of operations on data to convert it into useful information".