Question

find out the arthametic mean of 1,2,2,3,4,4,4,5,5,5,5,5,6,6,6,6,7,7​

Answer 1

Answer:

Answer in explanation. Please mark me as brainliast. Hope it helps.

Step-by-step explanation:

The arithmetic mean of the following numbers

1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is :

[A]4

[B]5

[C]14

[D]18

5

Required Mean of this given series =

= \frac{1\times 1+2\times 2+3\times 3+4\times 4+5\times 5+6\times 6+7\times 7}{1+2+3+4+5+6+7}

= \frac{1+4+9+16+25+36+49}{28}

=\frac{140}{28} = 5

Hence option [B] is correct answer.

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Answer 2

Mean =

$sum \: of \: numbers \div no \: of \: numbers$

Sum of numbers = 1+2+2+3+4+4+4+5+5+5+5+5+6+6+6+6+7+7 = 83

No of numbers = 18

Mean = 83/18 = 4.61