Question

find the value of x , if the mean of the given data in 9 = 12 5 3 18 10 x 6 6 17 also, find the range of the data​

Answer 1

This is the required answer.

Answer 2

$\huge\mathfrak{Answer :}$

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$mean \: = \: sum \: of \: all \: observations \: \div \: total \: number \: of \: observations \: \\ 9 \: = \: {12 + 5 + 3 + 18 + 10 + 6 + 6 + 17 + x} \: \div 9 \\ 9 \: \times 9 \: = \: 77 + x \\ 81 = 77 + x \\ 81 - 77 = x \\ 4 = x \\ \\ range \: of \: the \: given \: data \: = highest \: data \: - lowest \: data \\ = 18 - 3 \\ = 15$

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$\huge\mathcal\blue{Hope\: it\: helps}$