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The following table shows marks secured by 140 students in an examination:MarksNumber of students0−102010−202420−304030−403640−5020Calculate mean marks by the step deviation method.25.86

Answer» The following table shows marks secured by 140 students in an examination:

MarksNumber of students01020102024203040304036405020

Calculate mean marks by the step deviation method.
  1. 25.86


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