The arithmetic mean of 8 observations was found to be 12.5, then the sum of the observations is ___

a)100

b)

1 thought on “The arithmetic mean of 8 observations was found to be 12.5, then the sum of the observations is ___<br /><br />a)100<br /><br />b)”

1. Solution:–

   Arithmetic Mean of Observations = 12.5

   Number of Observations = 8

   ✯ Arithmetic Mean = Sum of Observations÷Number of Observations

   ✯ Sum of Observations = Mean×Number of Observations

   → 12.5×8

   → 100

   Sum of Observations = Option a. 100

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