Introduction Of Statistical Data (cont.)

Discrete – data can only take on certain individual values.

  Example:       

·         Number of pages in a book is a discrete data.

·         Shoe size is a Discrete data.  E.g.  5, 5½, 6, 6½ etc.  Not in between.

·         Number of people in a race is a discrete data.

   Continuous data – data can take on any value in a certain range.

  Example:

·         Length of a film is a continuous data.

·         Temperature is a continuous data.

·         Time taken to run a race is a continuous data. 

Sample – The subcollection data drawn from the population.

Population – The complete collection of all data to be studied.