When is inclusive and exclusive class interval used

  1. i remember my teacher was saying something like whenever we have to tabulate students marks we use only inclusive class interval (or i doubt it could be exclusive) or something like when decimal numbers like 3.5 are there we use something (that is either inclusive or exclusive) but i dont remember all that now

    so i want to know when should i show certain data (of rainfall, students marks, population etc.) in a inclusive method and exclusive method

    like i guess when marks of a students are given she told us to use only inclusive class interval but not sure
     
  2. jcsd
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