Given: Average age of 25 boys is 78.4 lbs Misread term = 69 Actual term = 96 Formula Used: Average = (Sum of All observations)/(Total Number of observations) Calculation: Let sum of all observations be S
S
25
=78.4 ⇒ S = 25 × 78.4 = 1960 lbs Now, In this sum 96 is read as 69 Actual Sum = 1960 - 69 + 96 = 1987 lbs Correct Average =
1987
25
=79.48 lbs ∴ The Correct Average Of the weight of Boys is 79.48 lbs