AVERAGE - Concept, Formula ,

AVERAGE 

average" refers to the arithmetic mean, the sum of the numbers divided by how many numbers are being averaged 
Average = Sum of Observations/Number of Observations =>S = A × N

Important Points To Remember
  1. a) If all the numbers are increased by ‘a’, then their average will also be increased by ‘a’.
  2. b) If all the numbers are decreased by ‘a’, then their average will also be decreased by ‘a’.
  3. c) If all the numbers are multiplied by ‘a’, then their average will also be multiplied by ‘a’.
  4. d) If all the numbers are divided by ‘a’, then their average will also be divided by ‘a’

Some Important Formulas Related To Average

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