Descriptive Statistic

Descriptive Statistic

1. Are techniques used to describe a set of data

   • The general pattern of the data
   • Describe what?
     • Where values tend to concentrate
     • Extreme or Unusual data values

2. Techniques

   • Frequency Table
     • Group QUALITATIVE data into mutually exclusive classes
       • Different types of results
         • 1st Result is the CLASS frequencies Or Frequency Distribution
           • Means the no. of observation in each class
         • 2nd Result is the Relative Class Frequencies OR Relative Frequency Distribution
           • Convert the class frequency over the total no. of observation to show the fraction
             • Purpose is to show the relationship between total no. of observations and class total