1.

What are the guidelines of classification?

Answer»

Following are some guidelines following while classification: 

  • The number of classes should generally between 4 and 15.
  • Exclusive classes should be formed for better continuity between the class intervals. 
  • The width of the classes should be usually kept constant throughout the distribution. 
  • Avoid open-end classes. 
  • The classes should be arranged in ascending or descending order. 
  • The lower limit of the first class should be either ‘o’ or multiple of 5.


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