Find the mean of 12, 15, 7, 8 and &lsquo

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Mean, Median and Mode

Question:

Find the mean of 12, 15, 7, 8 and ‘x +13’, if $x = 2$

Options:

11.2

9.5

11.4

Correct Answer:

11.4

Explanation:

Numbers are = 12, 15, 7, 8, (x + 13)

⇒ where x = 2,

⇒ 12, 15, 7, 8, (2 + 13)

⇒ 12, 15, 7, 8, 15

$Mean = \frac{Sum\, of\, all\, no.}{Total\,no.} = \frac{12\;+\;15\;+\;7\;+\;8\;+\;15}{5} = \frac{57}{5}=11.4$