The ages(in years) of the visitors to a shop are as follows:
13, 18, 13, 14, 13, 16, 14, 21, 13.
The average age of the visitor is ______.

13 years

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18 years

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14 years

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15 years

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Solution

The correct option is D 15 years
Given,
The ages(in years) of the visitors to a shop are
13, 18, 13, 14, 13, 16, 14, 21, 13.

The average age of the visitor
$= \frac{13 + 18 + 13 + 14 + 13 + 16 + 14 + 21 + 13}{9}$
$= \frac{135}{9} = 15$
Hence, the average age of the visitor is 15 years.

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The ages(in years) of the visitors to a shop are as follows: 13, 18, 13, 14, 13, 16, 14, 21, 13. The average age of the visitor is ______.

The correct option is D 15 yearsGiven, The ages(in years) of the visitors to a shop are 13, 18, 13, 14, 13, 16, 14, 21, 13. The average age of the visitor =13+18+13+14+13+16+14+21+139 =1359=15 Hence, the average age of the visitor is 15 years.

The ages(in years) of the visitors to a shop are as follows:
13, 18, 13, 14, 13, 16, 14, 21, 13.
The average age of the visitor is ______.

The correct option is D 15 years
Given,
The ages(in years) of the visitors to a shop are
13, 18, 13, 14, 13, 16, 14, 21, 13.

The average age of the visitor
$= \frac{13 + 18 + 13 + 14 + 13 + 16 + 14 + 21 + 13}{9}$
$= \frac{135}{9} = 15$
Hence, the average age of the visitor is 15 years.