Question

If the median is 15. Find x
12,16,25,x,x+4,44,56,78

Answer 1

Answer:

13;17

Step-by-step explanation:

(x + x+4)/2=15

2x/2 + 4/2=15

x + 2 = 15

x=13

Answer 2

$\huge{\underline{\blue{\mathcal{solution!!...}}}}$

$median = \frac{sum \: of \: obsevations}{total \: number \: of \: observations}$

$15 = \frac{12 + 16 + 25 + x + x + 4 + 44 + 56 + 78}{8}$

$15 = \frac{2x +235 }{8}$

$15 \times \frac{2x + 235}{8}$

$120 = 2x + 235$

$120 - 235 = 2x$

$- 115 = 2x$

$\frac{ - 115}{2} = x$

$- 57.5 = x$

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