Question : The average of the series 500, 505, 515, 530, 550 is:
Option 1: 520
Option 2: 515
Option 3: 505
Option 4: 530
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Correct Answer: 520
Solution :
$\text{Average}$
$=\frac{\text{Sum of all observations}}{{\text{Total number of observations}}}$
$=\frac{500+505+515+530+550}{5}$
$=\frac{2600}{5}$
$= 520$
Hence, the correct answer is 520.
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