The nature of data

• Some data sets consist of numbers

  (such as weights); and other non-numerical

  (such as color). The terms “quantitative data”

  and “qualitative data” are often

  distinguished between these two types.?

  nature of data
• categories that are distinguished by some nonnumeric

  characteristics. (Not number based, cannot be counted)?

  Qualitative data
• Consist of numbers representing counts or

  measurements. (Number based, can be counted)

  Quantitative Data
• Ages of Congressmen - Quantitative
• Quantitative - Number of hospitals that has nuclear center.
• Qualitative - Opinion on a political issue
• Qualitative - Occupation
• Quantitative - Number of students in the auditorium
• can be either be discrete or continuous?

  Quantitative data
• either a finite number of possible values or

  countable number of possible values as 0, or 1, or 2, and so on. (Can be counted)

  Discrete Data
• from infinitely many possible values that can be

  associated with points on a continuous scale in such a

  way that there are no gaps or interruptions. (Can be measured)

  Continuous Data