[Statistics Basic] 1. What is Data?

 

What is data?

All facts and values that can have meaning as data collected through observation and measurement.

 

 

Data Processing

Object -> Measurement -> Data -> Analysis or Processing -> Information -> Knowledge

 

 

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What is the standard scale when measuring data?

   - Categorical type: nominal scale, ranking scale

   - Numerical type: isometric scale, ratio scale

 

 

   1. Categorical type (Qualitative Data)

      : color, region, occupation, survey results, social class, academic background, etc.

     

      - Norminal Data

        : Assign numbers to classify certain attributes

      - Ordinal Data

        : Relative size comparison

 

   2. Numerical Data (Quantitative Data)

      : age, income, sales, etc.

 

      - Classification based on countability

        : count(discrete), measured value(continuous)

      - Classification by type of numerical assignment

        : Interval data, ratio data

 

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[references]

1. www.ktword.co.kr/abbr_view.php?nav=2&id=1421&m_temp1=5123