data types + levels

• what are the different types of data?


  • nominal
  • ordinal
  • interval
  • ratio
• Nominal Level of Measurement


  A categorical level where data is assigned labels without inherent meaning or order.
• Ordinal Level of Measurement


  A categorical level where data is assigned labels with inherent order, but the size of the intervals between categories is not known.
• Interval Level of Measurement


  A level of measurement where the distance between any two points is known, but the zero point is based on random choice
• Ratio Level of Measurement

  A level of measurement where the distance between any two points is known and the zero point is absolute, typically with a true zero (e.g., 0°C).