1_Descriptive Statistic

1_Descriptive Statistic

1. Techniques to describe the general pattern of the data

   • QUALITATIVE data
     • Visual Representation
       • Bar Chart
         • Key Feature: The GAP between the bars
           • Height of each rectangle indicate class frequency OR Relative frequency
       • Pie Chart
         • The relative frequencies or class frequency
           • Is shown in the %
     • Quantitative Representation
       • 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

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